| | Prefecture | AddedJcastle | City | AddedJcastle | Visits |
|---|
| Aburakawa Nobue Yashiki | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Ahoyama Castle | Shiga Prefecture | 2024 | Otsu | 2024 | February 4, 2024 |
| Aida Yakata | Nagano Prefecture | 2022 | Matsumoto | 2022 | |
| Aika Yashiki | Shizuoka Prefecture | 2025 | Iwata | 2025 | |
| Aiki Castle (Minochi) | Nagano Prefecture | 2020 | Nagano | 2020 | |
| Aimiyamamonomi Fort | Nagano Prefecture | 2022 | Tatsuno | 2022 | |
| Ainuta Fort | Yamanashi Prefecture | 2022 | Nirasaki | 2022 | |
| Aizu Wakamatsu Castle | Fukushima Prefecture | 1999 | Aizu Wakamatsu | 1999 | October 1997; January 1998; Sept. 14, 2003; July 17, 2011 |
| Akagi Kita Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Akagi Minami Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Akagi Yakata | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Akahori Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Akaiwa Castle | Aichi Prefecture | 2025 | Toyohashi | 2025 | |
| Akasaka Jin'ya | Aichi Prefecture | 2023 | Toyokawa | 2023 | |
| Akashi Castle | Hyogo Prefecture | 2007 | Akashi | 2007 | November 14, 2009; May 19, 2024; September 23, 2024 |
| Akashibu Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Akasu Castle (Ina) | Nagano Prefecture | 2020 | Komagane | 2020 | |
| Akatsuka Castle | Tokyo | 2020 | Tokyo | 2020 | May 4, 2019 |
| Akayama Jin'ya | Saitama Prefecture | 2023 | Kawaguchi | 2023 | June 4, 2023 |
| Akazawa Yakata | Nagano Prefecture | 2022 | Matsumoto | 2022 | |
| Akechi Castle | Gifu Prefecture | 2025 | Ena | 2025 | |
| Akechi Jin'ya | Gifu Prefecture | 2025 | Ena | 2025 | |
| Akechi Osayama Castle | Gifu Prefecture | 2021 | Kani | 2021 | |
| Aki Castle | Kochi Prefecture | 2013 | Aki City | 2013 | |
| Akiba Fort (Azumi) | Nagano Prefecture | 2023 | Hakuba | 2023 | |
| Akiba Fort (Ina) | Nagano Prefecture | 2021 | Tatsuno | 2021 | |
| Akita Castle | Akita Prefecture | 2012 | Akita City | 2012 | May 10, 2018 |
| Akiyama Yakata | Yamanashi Prefecture | 2023 | Minami-Alps | 2023 | |
| Akiyoshi Fort | Nagano Prefecture | 2023 | Matsumoto | 2023 | |
| Akizuki Castle | Fukuoka Prefecture | 2009 | Asakura | 2009 | |
| Akizuki Domain South Detached Palace | Fukuoka Prefecture | 2020 | Asakura | 2020 | |
| Ako Castle | Hyogo Prefecture | 2009 | Ako | 2009 | December 21, 2018 |
| Akozu Castle | Akita Prefecture | 2016 | Yurihonjo | 2016 | |
| Akutagawasan Castle | Osaka | 2013 | Takatsuki | 2013 | December 23, 2016, October 30, 2022 |
| Amabiki Castle | Nagano Prefecture | 2022 | Takayama | 2022 | |
| Amaga Castle | Miyazaki Prefecture | 2012 | Takaoka-cho | 2012 | |
| Amagasaki Castle | Hyogo Prefecture | 2013 | Amagasaki | 2013 | March 9, 2013 |
| Amagata Castle | Shizuoka Prefecture | 2025 | Mori | 2025 | |
| Amanari Castle | Yamanashi Prefecture | 2023 | Fujikawa | 2023 | |
| Amari Yakata | Yamanashi Prefecture | 2022 | Nirasaki | 2022 | |
| Amemiya Yashiki | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Ametoya Castle | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Amidadou Castle (Omi) | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Amidagamine Castle (Yamashiro) | Kyoto | 2022 | Kyoto | 2022 | November 22, 2022 |
| Amino Shingozaemon Yashiki | Yamanashi Prefecture | 2022 | Kōshū | 2022 | |
| Amino Yashiki | Yamanashi Prefecture | 2022 | Kōshū | 2022 | |
| Anjou Jin'ya | Aichi Prefecture | 2023 | Anjō | 2023 | |
| Annaka Castle | Gunma Prefecture | 2018 | Annaka | 2018 | March 11, 2018 |
| Ano Yakata | Shizuoka Prefecture | 2023 | Numazu | 2023 | |
| Anrakuji Yakata | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Ansho Castle | Aichi Prefecture | 2009 | Anjo | 2009 | October 15, 2009 |
| Anshouko Castle | Aichi Prefecture | 2023 | Anjō | 2023 | |
| Aoiyama Castle | Fukui Prefecture | 2023 | Obama | 2023 | |
| Aoki Castle (Azumi) | Nagano Prefecture | 2021 | Ômachi | 2021 | |
| Aoki Castle (Sakata) | Shiga Prefecture | 2022 | Maibara | 2022 | |
| Aono Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Aoyagi Castle | Nagano Prefecture | 2016 | Chikuhokumura | 2016 | November 1, 2015 |
| Aoyagi Yakata | Nagano Prefecture | 2022 | Chikuhoku | 2022 | |
| Aoyama Castle | Saitama Prefecture | 2015 | Ogawamachi | 2015 | February 14, 2015 |
| Aoyama Castle (Nagato) | Yamaguchi Prefecture | 2021 | Shimonoseki | 2021 | |
| Aoyama Castle (Omi) | Shiga Prefecture | 2021 | Higashi-Oumi | 2021 | |
| Aoyama Yashiki (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Ara Castle (Ina) | Nagano Prefecture | 2022 | Ina | 2022 | |
| Ara Castle (Murakami Clan Fort Network) | Nagano Prefecture | 2021 | Ueda | 2021 | |
| Aragaito Fort | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Arahorinaiki Yashiki | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Arai Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Araihara Castle | Nagano Prefecture | 2023 | Takayama | 2023 | |
| Araino Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Arako Castle | Aichi Prefecture | 2020 | Nagoya | 2020 | |
| Arashi Castle | Nagano Prefecture | 2020 | Shiojiri | 2020 | |
| Aratame Castle | Yamagata Prefecture | 2023 | Sakata | 2023 | |
| Arato Castle | Nagano Prefecture | 2008 | Chikuma | 2008 | October 16, 2008 |
| Aratoshou Castle | Nagano Prefecture | 2021 | Chikuma | 2021 | |
| Arayama Castle | Ishikawa Prefecture | 2019 | Nakanoto | 2019 | |
| Arikoyama Castle | Hyogo Prefecture | 2013 | Toyooka | 2013 | September 26, 2013 |
| Aruga Castle | Nagano Prefecture | 2020 | Suwa | 2020 | |
| Asaba Castle | Gunma Prefecture | 2016 | Kanra | 2016 | October 18, 2015 |
| Asada Castle (Chikuma) | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Asahara Yakata | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Asahi Castle (Chikuma) | Nagano Prefecture | 2019 | Asahi | 2019 | |
| Asahi Castle (Minochi) | Nagano Prefecture | 2021 | Nagano | 2021 | |
| Asahi Castle (Owari) | Aichi Prefecture | 2019 | Owari-Asahi | 2019 | |
| Asahi Moated Settlement | Aichi Prefecture | 2024 | Kiyosu | 2024 | |
| Asahiyama Castle | Nagano Prefecture | 2021 | Nagano | 2021 | |
| Asahiyama Castle (Kai) | Yamanashi Prefecture | 2022 | Hokuto | 2022 | |
| Asaka Castle (Chikuma) | Nagano Prefecture | 2021 | Chikuhoku | 2021 | |
| Asakura Yakata | Fukui Prefecture | 2023 | Fukui | 2023 | May 1-2, 2023 |
| Asama Palace | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Asama Yakata | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Asano Castle | Aichi Prefecture | 2025 | Ichinomiya | 2025 | |
| Ashigara Castle | Shizuoka Prefecture | 2010 | Oyama | 2010 | April 3, 2010 |
| Ashikaga Masauji Yakata | Saitama Prefecture | 2023 | Kuki | 2023 | June 4, 2023 |
| Ashikagashi Yakata | Tochigi Prefecture | 2007 | Ashikaga | 2007 | June 23, 2007 |
| Ashimori Jin'ya | Okayama Prefecture | 2022 | Okayama | 2022 | |
| Ashinoya Jin'ya | Aichi Prefecture | 2023 | Kōta | 2023 | |
| Asonuma Castle | Tochigi Prefecture | 2017 | Sano | 2017 | November 25, 2017 |
| Asou Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Asouko Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Asukayama Castle | Tokyo | 2022 | Tokyo | 2022 | Dec 27, 2021 |
| Asuke Castle | Aichi Prefecture | 2017 | Toyota | 2017 | August 4, 2019 |
| Asuke Jin'ya | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Atagoyama Noroshidai | Yamanashi Prefecture | 2023 | Kōfu | 2023 | |
| Atsushiba Yashiki (Koma) | Yamanashi Prefecture | 2022 | Hokuto | 2022 | |
| Awaji Castle (Chikuma) | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Awaya Yakata | Fukui Prefecture | 2023 | Mihama | 2023 | |
| Awazawa Castle (Suwa) | Nagano Prefecture | 2023 | Chino | 2023 | |
| Aya Castle | Miyazaki Prefecture | 2007 | Aya | 2007 | not personally visited. |
| Ayukawa Castle (Koka) | Shiga Prefecture | 2023 | Koka | 2023 | March 19, 2023 |
| Azai Higashi Castle | Aichi Prefecture | 2023 | Nishio | 2023 | |
| Azai Nishi Castle | Aichi Prefecture | 2023 | Nishio | 2023 | |
| Azuchi Castle | Shiga Prefecture | 2004 | Azuchi | 2004 | February 21, 2004; November 26, 2011; December 12, 2021 |
| Baba Noroshidai | Yamanashi Prefecture | 2025 | Hokuto | 2025 | |
| Baba Yashiki | Nagano Prefecture | 2019 | Matsumoto | 2019 | |
| Baba Yashiki (Kai) | Yamanashi Prefecture | 2022 | Hokuto | 2022 | |
| Banba Castle | Shiga Prefecture | 2025 | Maibara | 2025 | |
| Beffu Castle (Koka) | Shiga Prefecture | 2021 | Kouka | 2021 | |
| Besshoyama Fort | Shiga Prefecture | 2025 | Nagahama | 2025 | April 27, 2025 |
| Binmanji Castle | Shiga Prefecture | 2024 | Taga | 2024 | |
| Bitchu Matsuyama Castle | Okayama Prefecture | 2004 | Takahashi | 2004 | November 20, 2010; November 22, 2024 |
| Bitchu Takamatsu Castle | Okayama Prefecture | 2012 | Okayama City | 2012 | Viewer Donated |
| Biwa Castle (Kai) | Yamanashi Prefecture | 2022 | Yamanashi | 2022 | |
| Bizen Date (Uzen) | Yamagata Prefecture | 2023 | Tsuruoka | 2023 | |
| Bizenhara Yakata | Nagano Prefecture | 2022 | Matsumoto | 2022 | |
| Bodaiyama Castle | Gifu Prefecture | 2025 | Tarui | 2025 | |
| Bue Yakata (Totomi) | Shizuoka Prefecture | 2024 | Kikugawa | 2024 | |
| Busetsu Castle | Aichi Prefecture | 2022 | Toyota | 2022 | |
| Bushihara Fort | Yamanashi Prefecture | 2022 | Kōshū | 2022 | |
| Chamachi Battery (Obama Domain) | Fukui Prefecture | 2023 | Tsuruga | 2023 | |
| Chausudate | Akita Prefecture | 2021 | Noshiro | 2021 | November 12, 2020 |
| Chausuyama Castle (Chikuma) | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Chausuyama Castle (Nukata) | Aichi Prefecture | 2024 | Kōta | 2024 | |
| Chausuyama Castle (Shinano) | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Chausuyama Fort | Shiga Prefecture | 2025 | Nagahama | 2025 | April 20, 2025 |
| Chiba Castle | Chiba Prefecture | 2009 | Chiba | 2009 | June 20, 2009 |
| Chifuruya Castle (Sanada) | Nagano Prefecture | 2020 | Ueda | 2020 | |
| Chigasaki Castle | Kanagawa Prefecture | 2009 | Yokohama | 2009 | April 10, 2010 |
| Chihaya Castle | Osaka | 2014 | Osaka | 2014 | Feb 14, 2025 |
| Chikaoka Castle | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Chikatou Fort | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Chikuma Goten'yama Castle | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Chikusa Castle | Mie Prefecture | 2024 | Komono | 2024 | |
| Chikuzenbara Fort | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Chimura Yashiki | Gifu Prefecture | 2021 | Kani | 2021 | |
| Chinaha Castle | Okinawa Prefecture | 2024 | Kumejima | 2024 | |
| Chinen Castle | Okinawa Prefecture | 2023 | Nanjo City | 2023 | |
| Chiran Castle | Kagoshima Prefecture | 2013 | Minami Kyushu | 2013 | |
| Chofuku Castle | Tochigi Prefecture | 2018 | Oyama | 2018 | April 30, 2018 |
| Chouja Yashiki (Totomi) | Shizuoka Prefecture | 2025 | Iwata | 2025 | |
| Choujaike Yakata | Nagano Prefecture | 2022 | Ikeda | 2022 | |
| Choujayama Castle | Ibaraki Prefecture | 2020 | Mito | 2020 | |
| Choujayashiki Yakata | Nagano Prefecture | 2020 | Shiojiri | 2020 | |
| Choukokuji Fort | Yamanashi Prefecture | 2025 | Fuefuki | 2025 | |
| Chousenji Fort | Yamanashi Prefecture | 2023 | Hokuto | 2023 | |
| Choushouin Yakata | Nagano Prefecture | 2020 | Omachi | 2020 | |
| Chouzenjimae Jin'ya | Yamanashi Prefecture | 2021 | Koufu | 2021 | |
| Daikan Yashiki | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Daikan'yama Fort | Nagano Prefecture | 2022 | Shiojiri | 2022 | |
| Daikan'yashiki Castle | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Daikannon Castle | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Dainenji Yakata | Nagano Prefecture | 2020 | Omachi | 2020 | |
| Daita Castle | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Daiun'in Doi | Shizuoka Prefecture | 2022 | Gotemba | 2022 | |
| Damine Castle | Aichi Prefecture | 2023 | Shitara | 2023 | |
| Damine Yashiki | Aichi Prefecture | 2023 | Shitara | 2023 | |
| Dannoura Battery | Yamaguchi Prefecture | 2021 | Shimonoseki | 2021 | |
| Deura Castle | Nagano Prefecture | 2022 | Sakaki | 2022 | |
| Do Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Dodo Fort | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Dogiyama Fort | Shiga Prefecture | 2025 | Nagahama | 2025 | April 28, 2023 |
| Dohiyama Castle (Nagato) | Yamaguchi Prefecture | 2021 | Shimonoseki | 2021 | |
| Doi Castle (Mikawa) | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Doi Tono Yashiki | Shiga Prefecture | 2025 | Maibara | 2025 | |
| Dokanyama | Tokyo | 2022 | Tokyo | 2022 | Dec 26, 2021 |
| Dokyou Castle | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Dota Castle (Mino) | Gifu Prefecture | 2025 | Kani | 2025 | |
| Doudo Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Dousawa Fort | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Doushou Hori | Yamanashi Prefecture | 2023 | Tsuru | 2023 | |
| Ebe Castle (Omi) | Shiga Prefecture | 2022 | Yasu | 2022 | |
| Eboshigata Castle | Osaka | 2023 | Kawachinagano | 2023 | Dec 26, 2022 |
| Echizen Katsuyama Castle | Fukui Prefecture | 2010 | Katsuyama | 2010 | Viewer Donated |
| Echizen Ohno Castle | Fukui Prefecture | 2007 | Ohno | 2007 | |
| Edo Castle | Tokyo | 1999 | Tokyo | 1999 | August 1992, many times since |
| Egawa Fort | Shizuoka Prefecture | 2021 | Izunokuni | 2021 | |
| Eimeiin Fort | Yamanashi Prefecture | 2022 | Nirasaki | 2022 | |
| Ema Yakata | Gifu Prefecture | 2019 | Hida | 2019 | |
| Enryakuji | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Amidadou Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Higashitani Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Joudoin Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Kitatani Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Monjurou Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Nishitani Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Enryakuji Shakadou Fort | Shiga Prefecture | 2022 | Ôtsu | 2022 | |
| Fubukikaito Castle (Ina) | Nagano Prefecture | 2022 | Ina | 2022 | |
| Fuchu Castle (Hitachi) | Ibaraki Prefecture | 2022 | Ishioka | 2022 | |
| Fudoudou Yakata | Aichi Prefecture | 2023 | Toyota | 2023 | |
| Fujihashi Castle (Tokyo) | Tokyo | 2015 | Oume | 2015 | May 24, 2015 |
| Fujii Castle (Mikawa) | Aichi Prefecture | 2025 | Anjo | 2025 | |
| Fujikake Jin'ya | Kyoto | 2024 | Ayabe | 2024 | April 14, 2024 |
| Fujikawa Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Fujimaki Castle | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Fujimaki Yashiki | Yamanashi Prefecture | 2022 | Hokuto | 2022 | |
| Fujimaru Yakata | Shizuoka Prefecture | 2024 | Kikugawa | 2024 | |
| Fujita Castle | Fukushima Prefecture | 2017 | Ishikawa | 2017 | |
| Fukakusa Yakata | Yamanashi Prefecture | 2020 | Hokuto | 2020 | |
| Fukayama Castle (Suruga) | Shizuoka Prefecture | 2023 | Susono | 2023 | |
| Fukazawa Castle | Shizuoka Prefecture | 2014 | Gotenba | 2014 | April 13, 2014 |
| Fukigabora Castle | Gifu Prefecture | 2025 | Kani | 2025 | |
| Fukouzu Castle | Aichi Prefecture | 2024 | Kōta | 2024 | |
| Fukuchiyama Castle | Kyoto | 2009 | Fukuchiyama | 2009 | November 5, 2021 |
| Fukui Castle | Fukui Prefecture | 2006 | Fukui City | 2006 | June 13, 2006; May 1, 2023 |
| Fukui Castle (Shinano) | Nagano Prefecture | 2023 | Takayama | 2023 | |
| Fukujima Castle (Takai) | Nagano Prefecture | 2022 | Suzaka | 2022 | |
| Fukuju Fort (Odani Castle) | Shiga Prefecture | 2024 | Nagahama | 2024 | |
| Fukuoka Castle | Fukuoka Prefecture | 2006 | Fukuoka City | 2006 | |
| Fukuouji Yakata | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Fukurouga Castle | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Fukushima Castle | Fukushima Prefecture | 2016 | Fukushima City | 2016 | |
| Fukushima Castle (Echigo) | Niigata Prefecture | 2017 | Jōetsu | 2017 | |
| Fukushima Castle (Kiso) | Nagano Prefecture | 2020 | Kiso | 2020 | |
| Fukutake Castle (Chikuzen) | Fukuoka Prefecture | 2020 | Asakura | 2020 | |
| Fukuyama Castle | Hiroshima Prefecture | 2006 | Fukuyama | 2006 | November 14, 2009; June 8, 2023 |
| Fukuyo Castle | Nagano Prefecture | 2020 | Minowa | 2020 | |
| Fukuzawa Yakata | Nagano Prefecture | 2022 | Sakaki | 2022 | |
| Fukuzuka Castle (Mino) | Gifu Prefecture | 2022 | Wanōchi | 2022 | |
| Fumimichi Castle | Nagano Prefecture | 2021 | Nagano | 2021 | |
| Funagatayama Castle | Aichi Prefecture | 2025 | Toyohashi | 2025 | |
| Funage Castle | Hyogo Prefecture | 2024 | Akashi | 2024 | September 23, 2024 |
| Funai Castle | Oita Prefecture | 2012 | Oita City | 2012 | |
| Funaki Castle (Omi) | Shiga Prefecture | 2022 | Ōmi-Hachiman | 2022 | |
| Funaoka Castle | Miyagi Prefecture | 2017 | Shibata | 2017 | |
| Funaokayama Castle | Kyoto | 2020 | Kyoto | 2020 | |
| Funayama Castle | Hiroshima Prefecture | 2019 | Akitakata | 2019 | November 7, 2018 |
| Funayama Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Funehiki Castle | Fukushima Prefecture | 2016 | Tamura City | 2016 | |
| Furuhata Yakata | Nagano Prefecture | 2022 | Kiso | 2022 | |
| Furui Castle (Mikawa) | Aichi Prefecture | 2023 | Anjō | 2023 | |
| Furujiro Fort | Yamanashi Prefecture | 2025 | Fuefuki | 2025 | |
| Furujou Yakata | Nagano Prefecture | 2021 | Ômachi | 2021 | |
| Furujouyama Castle (Hanishina) | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Furukawa Castle | Gifu Prefecture | 2022 | Hida | 2022 | |
| Furumaya Castle (Azumi) | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Furumaya Yakata | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Furumiya Castle | Aichi Prefecture | 2023 | Shinshiro | 2023 | |
| Furumiya Castle (Kai) | Yamanashi Prefecture | 2023 | Hokuto | 2023 | |
| Furusutobaru Ruins | Okinawa Prefecture | 2024 | Ishigaki | 2024 | |
| Furuwatari Castle | Aichi Prefecture | 2020 | Nagoya | 2020 | |
| Fuse Castle (Sarashina) | Nagano Prefecture | 2020 | Nagano | 2020 | |
| Fuseya Castle | Gifu Prefecture | 2024 | Ginan | 2024 | |
| Fuseyachouja Yakata | Nagano Prefecture | 2022 | Fujimi | 2022 | |
| Fushimi Castle | Kyoto | 2004 | Kyoto | 2004 | July 8, 2022 |
| Fusou Castle (Mikawa) | Aichi Prefecture | 2023 | Gamagôri | 2023 | |
| Fusumada Castle | Kanagawa Prefecture | 2023 | Sagamihara | 2023 | |
| Futae Castle (Azumi) | Nagano Prefecture | 2023 | Ômachi | 2023 | |
| Futamata Castle | Shizuoka Prefecture | 2010 | Hamamatsu | 2010 | January 12, 2020 |
| Futatsu Bungonokami Yakata | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Futatsugi Castle (Azumi) | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Futoge Castle | Ishikawa Prefecture | 2017 | Hakusan | 2017 | |
| Futoh'yama Castle | Shiga Prefecture | 2020 | Maibara | 2020 | |
| Futsukamachi Castle | Gifu Prefecture | 2024 | Gujō | 2024 | |
| Futta Castle (Suwa) | Nagano Prefecture | 2023 | Chino | 2023 | |
| Fuwa no Seki | Gifu Prefecture | 2024 | Sekigahara | 2024 | |
| Gakiyama Noroshidai | Nagano Prefecture | 2021 | Suwa | 2021 | |
| Gakuden Castle (Owari) | Aichi Prefecture | 2020 | Inuyama | 2020 | |
| Ganjaku Castle | Fukuoka Prefecture | 2013 | Soeda | 2013 | |
| Ganryakuji Castle | Aichi Prefecture | 2023 | Toyokawa | 2023 | |
| Ganshouin Yakata | Nagano Prefecture | 2022 | Obuse | 2022 | |
| Garyuzan Castle | Gifu Prefecture | 2024 | Kaizu | 2024 | |
| Gassan Toda Castle | Shimane Prefecture | 2011 | Yasugi | 2011 | November 19, 2010 |
| Genbao Castle | Fukui Prefecture | 2023 | Tsuruga | 2023 | April 22, 2023; Apr 21, 2025 |
| Genga Yashiki (Kai) | Yamanashi Prefecture | 2022 | Shōwa | 2022 | |
| Genji Yakata (Kai) | Yamanashi Prefecture | 2021 | Ichikawamisato | 2021 | |
| Gentairi Castle | Nagano Prefecture | 2023 | Suzaka | 2023 | |
| Gifu Castle | Gifu Prefecture | 1999 | Gifu | 1999 | July 1992; May 1996; Aug 2, 2019 |
| Gion Castle | Tochigi Prefecture | 2018 | Oyama | 2018 | April 30, 2018 |
| Gobara Castle | Gunma Prefecture | 2016 | Higashiazuma | 2016 | April 29, 2016 |
| Gochaku Castle | Hyogo Prefecture | 2020 | Himeji | 2020 | February 28, 2019 |
| Goi Castle (Mikawa) | Aichi Prefecture | 2023 | Gamagôri | 2023 | |
| Gojou Daikansho | Nara Prefecture | 2025 | Gojō | 2025 | |
| Gokan Castle | Gunma Prefecture | 2016 | Annaka | 2016 | October 18, 2015 |
| Goma Nakamura Castle | Kyoto | 2025 | Nantan | 2025 | October 14, 2024 |
| Gongen Yakata | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Gongen'yama Castle (Mino) | Gifu Prefecture | 2025 | Kani | 2025 | |
| Goryokaku Fort | Hokkaido | 2002 | Hakodate | 2002 | July 21, 2002 |
| Goryoudaira Fort | Yamanashi Prefecture | 2023 | Hokuto | 2023 | |
| Goryu Castle | Hiroshima Prefecture | 2023 | Akitakata | 2023 | Feb 24, 2023 |
| Gouda Fort | Toyama Prefecture | 2021 | Kamiichi | 2021 | |
| Goudo Castle | Gifu Prefecture | 2025 | Mitake | 2025 | |
| Goudo Noroshidai | Yamanashi Prefecture | 2025 | Hokuto | 2025 | |
| Gujo Hachiman Castle | Gifu Prefecture | 2004 | Gujo Hachiman | 2004 | February 22, 2004 |
| Gushikawa Castle (Itoman Okinawa) | Okinawa Prefecture | 2023 | Itoman City | 2023 | |
| Gushikawa Castle (Kumejima Okinawa) | Okinawa Prefecture | 2024 | Kumejima | 2024 | |
| Gyoichiyama Fort | Shiga Prefecture | 2025 | Nagahama | 2025 | April 27, 2025 |
| Ha Castle | Aichi Prefecture | 2023 | Hekinan | 2023 | |
| Haba Castle | Nagano Prefecture | 2020 | Tatsuno | 2020 | |
| Habako Castle | Nagano Prefecture | 2022 | Tatsuno | 2022 | |
| Habauehori Yashiki | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Habu Castle | Kyoto | 2024 | Nantan | 2024 | November 12, 2023 |
| Habu Castle (Mikawa) | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Hachigata Castle | Saitama Prefecture | 2006 | Yorii | 2006 | March 25, 2006 |
| Hachikenchōja Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Hachiman'yama Castle (Tanba) | Hyogo Prefecture | 2021 | Tanba | 2021 | |
| Hachimanpara Jinsho | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Hachimanshita Battery (Obama Domain) | Fukui Prefecture | 2023 | Obama | 2023 | |
| Hachinohe Castle | Aomori Prefecture | 2010 | Hachinohe | 2010 | May 21, 2010 |
| Hachioji Castle | Tokyo | 2002 | Hachioji | 2002 | January 26, 2002; June 29, 2013; May 2, 2015 |
| Hadanashi Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hadanashiyama Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Haga Castle | Hyogo Prefecture | 2011 | Shiso | 2011 | Viewer Donated |
| Hagi Castle | Yamaguchi Prefecture | 2007 | Hagi | 2007 | November 21, 2014; March 20-21, 2024 |
| Hagi Castle (Hoi) | Aichi Prefecture | 2025 | Toyokawa | 2025 | |
| Hagikura Fort | Nagano Prefecture | 2020 | Shimo-Suwa | 2020 | |
| Hagiwarasuwa Castle | Gifu Prefecture | 2022 | Gero | 2022 | |
| Haguro Castle (Owari) | Aichi Prefecture | 2020 | Inuyama | 2020 | |
| Haibara Castle | Nagano Prefecture | 2016 | Matsumoto | 2016 | October 31, 2015 |
| Haiyama Castle | Kyoto | 2022 | Kyoto | 2022 | June 3, 2022 |
| Hajikamigou Castle | Aichi Prefecture | 2023 | Toyohashi | 2023 | |
| Hajoudo Castle | Aichi Prefecture | 2023 | Kariya | 2023 | |
| Hajoudoko Castle | Aichi Prefecture | 2024 | Kariya | 2024 | |
| Hakii Castle | Yamanashi Prefecture | 2025 | Minobu | 2025 | |
| Hakii Yakata | Yamanashi Prefecture | 2025 | Minobu | 2025 | |
| Hakota Castle (Kozuke) | Gunma Prefecture | 2021 | Shibukawa | 2021 | |
| Hakoyama Castle (Takai) | Nagano Prefecture | 2020 | Nakano | 2020 | |
| Hakoyanagi Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hakusan Castle | Yamanashi Prefecture | 2016 | Nirasaki | 2016 | October 12, 2015 |
| Hakusan Castle (Harima) | Hyogo Prefecture | 2017 | Himeji | 2017 | |
| Hamada Castle | Shimane Prefecture | 2015 | Hamada | 2015 | November 23, 2014 |
| Hamada Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Hamagawa Castle | Gunma Prefecture | 2022 | Takasaki | 2022 | |
| Hamamatsu Castle | Shizuoka Prefecture | 1999 | Hamamatsu | 1999 | May 1999, January 12, 2020 |
| Hanagoya Castle (Murakami Clan Fort Network) | Nagano Prefecture | 2021 | Ueda | 2021 | |
| Hanakuma Castle | Hyogo Prefecture | 2016 | Kobe | 2016 | October 11, 2025 |
| Hanamaki Castle | Iwate Prefecture | 2018 | Hanamaki | 2018 | |
| Hanaoka Castle (Azumi) | Nagano Prefecture | 2023 | Ikeda | 2023 | |
| Hanaoka Castle (Saku) | Nagano Prefecture | 2021 | Sakuho | 2021 | |
| Hanaoka Castle (Suwa) | Nagano Prefecture | 2019 | Okaya | 2019 | |
| Hanasaki Castle (Tsuru) | Yamanashi Prefecture | 2023 | Ôtsuki | 2023 | |
| Hanawa Castle | Chiba Prefecture | 2017 | Nagareyama | 2017 | September 3, 2017 |
| Hanazawa Yakata | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Hanazono Castle | Saitama Prefecture | 2018 | Yorii | 2018 | April 1, 2018 |
| Hanazono Mitake Castle | Saitama Prefecture | 2018 | Yorii | 2018 | April 1, 2018 |
| Hanehigashi Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hanenishi Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Haneo Castle | Gunma Prefecture | 2022 | Naganohara | 2022 | |
| Hannyaji Castle | Hyogo Prefecture | 2025 | Tanba Sasayama | 2025 | November 7, 2024 |
| Hara Castle | Nagasaki Prefecture | 2025 | Minamishimabara | 2025 | |
| Harano Castle (Suwa) | Nagano Prefecture | 2023 | Chino | 2023 | |
| Haranomoto Castle | Nagano Prefecture | 2020 | Komagane | 2020 | |
| Haruyamako Castle | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Haruyamaoh Castle | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Hasedo Castle | Yamagata Prefecture | 2012 | Yamagata City | 2012 | November 2, 2017 |
| Hashira Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hatada Castle (Omi) | Shiga Prefecture | 2021 | Higashi-Oumi | 2021 | |
| Hatakenaka Yakata | Nagano Prefecture | 2020 | Shiojiri | 2020 | |
| Hatayama Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Hatchou Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hatsuzawa Castle | Tokyo | 2020 | Hachioji | 2020 | |
| Hatta Yashiki | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Hattori Castle (Koka) | Shiga Prefecture | 2022 | Koka | 2022 | February 25, 2022 |
| Hayakawa Yashiki (Kai) | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Hayaotoshi Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Hayashi Kohee Yashiki | Yamanashi Prefecture | 2022 | Chūō | 2022 | |
| Hayashikojo Castle | Nagano Prefecture | 2015 | Matsumoto | 2015 | October 31, 2015 |
| Hayashiohjo Castle | Nagano Prefecture | 2015 | Matsumoto | 2015 | October 31, 2015 |
| Hayashitaniyama Fort | Shiga Prefecture | 2025 | Nagahama | 2025 | April 27, 2025 |
| Hayashizore Castle | Aichi Prefecture | 2024 | Toyota | 2024 | |
| Hazu Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Hazu Jin'ya | Aichi Prefecture | 2023 | Nishio | 2023 | |
| Hekirichi Jinya | Hokkaido | 2011 | Hokuto | 2011 | Viewer Donated |
| Hekitani Castle | Kyoto | 2024 | Ayabe | 2024 | April 14, 2024 |
| Henmi Yashiki (Kai) | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Hida Castle (Omi) | Shiga Prefecture | 2022 | Hikone | 2022 | |
| Hieinoyama Fort | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Higashi Goma Castle | Kyoto | 2025 | Nantan | 2025 | October 14, 2024 |
| Higashi Hirose Castle | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Higashi Kuramae Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Higashi Maruoka Castle (Koka) | Shiga Prefecture | 2022 | Konan | 2022 | April 1, 2022 |
| Higashi Sakabe Castle | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Higashi Wada Castle | Nagano Prefecture | 2020 | Nagano | 2020 | |
| Higashijou Castle (Chikuma) | Nagano Prefecture | 2021 | Chikuhoku | 2021 | |
| Higuchi Castle (Omi) | Shiga Prefecture | 2022 | Maibara | 2022 | |
| Higuchiuchi Castle (Ina) | Nagano Prefecture | 2022 | Tatsuno | 2022 | |
| Hiji Castle | Oita Prefecture | 2025 | Hiji | 2025 | |
| Hijika Castle | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hijiyama Castle (Iga) | Mie Prefecture | 2022 | Iga | 2022 | |
| Hikaru Castle | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Hiki Castle | Nagano Prefecture | 2022 | Ikusaka | 2022 | |
| Hikida Castle | Fukui Prefecture | 2023 | Tsuruga | 2023 | |
| Hikidono Yashiki | Nagano Prefecture | 2022 | Ikusaka | 2022 | |
| Hikobe Yashiki | Gunma Prefecture | 2020 | Kiryu | 2020 | March 22, 2020 |
| Hikone Castle | Shiga Prefecture | 1999 | Hikone | 1999 | April 1996; February 21, 2004; March 1, 2019; October 8, 2021; Nov 3, 2022; February 20, 2024; July 7, 2024 |
| Hikuma Castle | Shizuoka Prefecture | 2020 | Hamamatsu | 2020 | January 12, 2020 |
| Hime Castle (Chikuma) | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Hime Castle (Hanishina) | Nagano Prefecture | 2021 | Sakaki | 2021 | |
| Hime Castle (Mikawa) | Aichi Prefecture | 2020 | Anjo | 2020 | |
| Himega Castle (Mikawa) | Aichi Prefecture | 2022 | Okazaki | 2022 | |
| Himeji Castle | Hyogo Prefecture | 1999 | Himeji | 1999 | Feb 1996; Dec 1997; Aug 1998; Mar 21, 2004; Nov 15, 2009; Mar 3, 2012; Oct 10, 2012; Dec 19, 2018; Feb 28, 2019; Mar 21, 2022; Feb 25, 2023; Aug 18, 2023; Sept 16, 2023; Feb 18, 2024; Sept 23, 2024 |
| Himuro Yakata | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Hina Yashiki | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hinatabata Yakata | Nagano Prefecture | 2023 | Ueda | 2023 | |
| Hino Castle | Shiga Prefecture | 2023 | Hino | 2023 | |
| Hinode Castle | Yamanashi Prefecture | 2022 | Nirasaki | 2022 | |
| Hinoe Castle | Nagasaki Prefecture | 2025 | Minamishimabara | 2025 | |
| Hinohara Castle | Tokyo | 2023 | Hinohara | 2023 | |
| Hirabayashi Castle (Minochi) | Nagano Prefecture | 2020 | Nagano | 2020 | |
| Hirado Castle | Nagasaki Prefecture | 2011 | Hirado | 2011 | |
| Hirai Castle | Gunma Prefecture | 2017 | Fujioka | 2017 | April 15, 2017 |
| Hirai Castle (Omi) | Shiga Prefecture | 2021 | Aishou | 2021 | |
| Hirai Kanayama Castle | Gunma Prefecture | 2017 | Fujioka | 2017 | April 15, 2017 |
| Hirai Yashiki (Kai) | Yamanashi Prefecture | 2022 | Fuefuki | 2022 | |
| Hiraide Moated Settlement | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Hiraiwa Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hiraizumi Date | Iwate Prefecture | 2023 | Hiraizumi | 2023 | |
| Hirakura Castle | Nagano Prefecture | 2021 | Otari | 2021 | |
| Hirao Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Hirase Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Hirase Kitano Castle | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Hirase Noroshidai | Yamanashi Prefecture | 2022 | Kōfu | 2022 | |
| Hirase Yakata | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Hirata Yashiki | Yamanashi Prefecture | 2022 | Hokuto | 2022 | |
| Hiratsuka Castle | Tokyo | 2021 | Tokyo | 2021 | Dec 27, 2021 |
| Hirazuka Yakata | Shiga Prefecture | 2025 | Nagahama | 2025 | |
| Hiromi Castle | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Hirosaki Castle | Aomori Prefecture | 1999 | Hirosaki | 1999 | April 1999, May 21, 2010 |
| Hirose Castle (Hida) | Gifu Prefecture | 2022 | Takayama | 2022 | |
| Hiroshima Castle | Hiroshima Prefecture | 1999 | Hiroshima | 1999 | February 1996; November 23, 2014; November 9, 2018 |
| Hirota Castle | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Hisawa Castle | Nagano Prefecture | 2020 | Chino | 2020 | |
| Hishakuyama Castle | Gunma Prefecture | 2020 | Kiryu | 2020 | March 22, 2020 |
| Hitomoshi Castle (Saku) | Nagano Prefecture | 2021 | Minami-Aiki | 2021 | |
| Hitomoshiyama Fort (Suwa) | Nagano Prefecture | 2023 | Okaya | 2023 | |
| Hitoyoshi Castle | Kumamoto Prefecture | 2012 | Hitoyoshi | 2012 | |
| Hiyama Castle | Akita Prefecture | 2021 | Noshiro | 2021 | November 12, 2020 |
| Hizen Nagoya Castle | Saga Prefecture | 2011 | Karatsu | 2011 | Viewer Donated |
| Hobonishi Castle | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Hodarakuji Castle | Shiga Prefecture | 2019 | Koka | 2019 | |
| Hojo Clan Residence | Shizuoka Prefecture | 2021 | Izunokuni | 2021 | |
| Hokkyu Castle | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Hokkyu Jin'ya | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Hokoji Castle | Hyogo Prefecture | 2025 | Sasayama | 2025 | November 7, 2024 |
| Hongou Castle (Owari) | Aichi Prefecture | 2025 | Nisshin | 2025 | |
| Honjin'yama Castle (Mino) | Gifu Prefecture | 2025 | Kani | 2025 | |
| Honjinzawabata Fort | Nagano Prefecture | 2021 | Matsumoto | 2021 | |
| Honshouji Castle | Aichi Prefecture | 2020 | Anjo | 2020 | |
| Hora Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hora Yakata | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Hori Castle (Minochi) | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Horigane Yakata | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Horigoe Palace | Shizuoka Prefecture | 2021 | Izunokuni | 2021 | |
| Horikawa Castle | Shizuoka Prefecture | 2024 | Hamamatsu | 2024 | |
| Horikoshi Castle | Aomori Prefecture | 2021 | Hirosaki | 2021 | November 11, 2020 |
| Horinouchi Castle (Kai) | Yamanashi Prefecture | 2022 | Kōfu | 2022 | |
| Horinouchi Yakata (Azumi) | Nagano Prefecture | 2022 | Ikeda | 2022 | |
| Horinouchi Yakata (Ina) | Nagano Prefecture | 2022 | Tatsuno | 2022 | |
| Horinouchi Yashiki | Nagano Prefecture | 2021 | Shiojiri | 2021 | |
| Horishi Yakata (Omi) | Shiga Prefecture | 2025 | Maibara | 2025 | |
| Horiuchi Castle (Mikawa) | Aichi Prefecture | 2023 | Anjō | 2023 | |
| Horiuchi Shingu Castle | Wakayama Prefecture | 2025 | Shingū | 2025 | |
| Hoshigasaki Castle | Shiga Prefecture | 2022 | Ryuo | 2022 | May 3, 2022 |
| Hoshina Maenoyama Fort | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Hoshina Yakata | Nagano Prefecture | 2023 | Nagano | 2023 | |
| Hoshiyamako Castle | Yamanashi Prefecture | 2025 | Hokuto | 2025 | |
| Hosogaya Yakata | Nagano Prefecture | 2021 | Azumino | 2021 | |
| Hosokawagonsui Castle | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Hosokawaonmaeda Castle | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Hosokawashiroyama Castle | Aichi Prefecture | 2024 | Okazaki | 2024 | |
| Hosshouji Castle (Mikawa) | Aichi Prefecture | 2023 | Okazaki | 2023 | |
| Hotaka Yakata | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Hotta no Saku | Akita Prefecture | 2012 | Daisen | 2012 | |
| Houjiin Doi | Shizuoka Prefecture | 2022 | Gotemba | 2022 | |
| Hourinji Castle | Gifu Prefecture | 2025 | Motosu | 2025 | |
| Hourinji Yakata | Tokyo | 2023 | Akiruno | 2023 | |
| Houshouji Fort | Nagano Prefecture | 2020 | Saku | 2020 | |
| Houzouji Yakata | Nagano Prefecture | 2020 | Azumino | 2020 | |
| Hyakusaiji Castle | Shiga Prefecture | 2013 | Higashi Omi | 2013 | |
| Hyogo Castle | Hyogo Prefecture | 2020 | Kobe | 2020 | October 11, 2025 |
| Iba Castle | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Iba Palace | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Ibako Castle | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Ibaraki Castle | Osaka | 2014 | Ibaraki | 2014 | October 19, 2014 |
| Ibarayama Castle | Nagano Prefecture | 2022 | Hakuba | 2022 | |
| Ibayama Castle | Shiga Prefecture | 2022 | Higashi-Ōmi | 2022 | |
| Ibi Castle | Gifu Prefecture | 2025 | Ibigawa | 2025 | |
| Ibo Castle (Mikawa) | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Ibo Higashi Castle | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Ibo Jin'ya | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Ibo Nishi Castle | Aichi Prefecture | 2025 | Toyota | 2025 | |
| Ibuka Castle | Nagano Prefecture | 2020 | Matsumoto | 2020 | |
| Ichiba Castle (Ise) | Mie Prefecture | 2025 | Yokkaichi | 2025 | |
| Ichibajin'yama Castle (Koka) | Shiga Prefecture | 2021 | Koka | 2021 | |
| Ichigousan Castle | Gunma Prefecture | 2022 | Takasaki | 2022 | |
| Ichijodani Castle | Fukui Prefecture | 2013 | Fukui | 2013 | May 1-2, 2023 |
| Ichijodani Kojo Castle | Fukui Prefecture | 2023 | Fukui | 2023 | May 1-2, 2023 |
| Ichijodaniyama Castle | Fukui Prefecture | 2023 | Fukui | 2023 | May 1-2, 2023 |
| Ichijojiyama Castle | Kyoto | 2022 | Kyoto | 2022 | October 24, 2021 |
| Ichikawa Jin'ya | Yamanashi Prefecture | 2021 | Ichikawamisato | 2021 | |
| Ichinodaira Castle (Ina) | Nagano Prefecture | 2022 | Tatsuno | 2022 | |
| Ichinomiya Castle | Tokushima Prefecture | 2012 | Tokushima City | 2012 | |
