| | Features | AddedJcastle | City | AddedJcastle |
|---|
| Aburakawa Nobue Yashiki | | 2022 | Fuefuki | 2022 |
| Ahoyama Castle | | 2024 | Otsu | 2024 |
| Aida Yakata | | 2022 | Matsumoto | 2022 |
| Aika Yashiki | | 2025 | Iwata | 2025 |
| Aiki Castle (Minochi) | Trenches | 2020 | Nagano | 2020 |
| Aimiyamamonomi Fort | | 2022 | Tatsuno | 2022 |
| Ainuta Fort | | 2022 | Nirasaki | 2022 |
| Aizu Wakamatsu Castle | Samurai homes
Main keep
Walls
Turrets
Water moats
Gates
Bridges
Stone walls | 1999 | Aizu Wakamatsu | 1999 |
| Akagi Kita Castle | Trenches | 2020 | Matsumoto | 2020 |
| Akagi Minami Castle | Trenches | 2020 | Matsumoto | 2020 |
| Akagi Yakata | | 2021 | Matsumoto | 2021 |
| Akahori Castle (Ise) | | 2025 | Yokkaichi | 2025 |
| Akaiwa Castle | Trenches | 2025 | Toyohashi | 2025 |
| Akasaka Jin'ya | Gates | 2023 | Toyokawa | 2023 |
| Akashi Castle | Walls
Turrets
Water moats
Gates
Stone walls | 2007 | Akashi | 2007 |
| Akashibu Castle (Mikawa) | | 2023 | Okazaki | 2023 |
| Akasu Castle (Ina) | Trenches | 2020 | Komagane | 2020 |
| Akatsuka Castle | Trenches | 2020 | Tokyo | 2020 |
| Akayama Jin'ya | Trenches | 2023 | Kawaguchi | 2023 |
| Akazawa Yakata | | 2022 | Matsumoto | 2022 |
| Akechi Castle | Trenches
Gates | 2025 | Ena | 2025 |
| Akechi Jin'ya | Water moats
Castle town
Stone walls | 2025 | Ena | 2025 |
| Akechi Osayama Castle | Trenches
Walls | 2021 | Kani | 2021 |
| Aki Castle | Samurai homes
Water moats
Castle town
Stone walls | 2013 | Aki City | 2013 |
| Akiba Fort (Azumi) | Trenches | 2023 | Hakuba | 2023 |
| Akiba Fort (Ina) | | 2021 | Tatsuno | 2021 |
| Akita Castle | Walls
Gates | 2012 | Akita City | 2012 |
| Akiyama Yakata | | 2023 | Minami-Alps | 2023 |
| Akiyoshi Fort | Trenches
Stone walls | 2023 | Matsumoto | 2023 |
| Akizuki Castle | Trenches
Samurai homes
Walls
Castle town
Gates
Stone walls | 2009 | Asakura | 2009 |
| Akizuki Domain South Detached Palace | Stone walls | 2020 | Asakura | 2020 |
| Ako Castle | Samurai homes
Walls
Turrets
Water moats
Gates
Bridges
Stone walls | 2009 | Ako | 2009 |
| Akozu Castle | Turrets | 2016 | Yurihonjo | 2016 |
| Akutagawasan Castle | Trenches
Stone walls | 2013 | Takatsuki | 2013 |
| Amabiki Castle | Trenches | 2022 | Takayama | 2022 |
| Amaga Castle | Main keep
Walls
Turrets
Gates
Stone walls | 2012 | Takaoka-cho | 2012 |
| Amagasaki Castle | Main keep
Walls
Turrets
Water moats
Stone walls | 2013 | Amagasaki | 2013 |
| Amagata Castle | Trenches | 2025 | Mori | 2025 |
| Amanari Castle | Trenches | 2023 | Fujikawa | 2023 |
| Amari Yakata | | 2022 | Nirasaki | 2022 |
| Amemiya Yashiki | | 2022 | Fuefuki | 2022 |
| Ametoya Castle | Trenches | 2021 | Matsumoto | 2021 |
| Amidadou Castle (Omi) | | 2022 | Higashi-Ōmi | 2022 |
| Amidagamine Castle (Yamashiro) | Trenches | 2022 | Kyoto | 2022 |
| Amino Shingozaemon Yashiki | Water moats | 2022 | Kōshū | 2022 |
| Amino Yashiki | | 2022 | Kōshū | 2022 |
| Anjou Jin'ya | | 2023 | Anjō | 2023 |
| Annaka Castle | Samurai homes
Castle town
Gates | 2018 | Annaka | 2018 |
| Ano Yakata | | 2023 | Numazu | 2023 |
| Anrakuji Yakata | Stone walls | 2021 | Azumino | 2021 |
| Ansho Castle | Trenches | 2009 | Anjo | 2009 |
| Anshouko Castle | | 2023 | Anjō | 2023 |
| Aoiyama Castle | Trenches | 2023 | Obama | 2023 |
| Aoki Castle (Azumi) | Trenches | 2021 | Ômachi | 2021 |
| Aoki Castle (Sakata) | | 2022 | Maibara | 2022 |
| Aono Castle (Mikawa) | | 2023 | Okazaki | 2023 |
| Aoyagi Castle | Trenches
Walls
Turrets
Gates
Stone walls | 2016 | Chikuhokumura | 2016 |
| Aoyagi Yakata | Stone walls | 2022 | Chikuhoku | 2022 |
| Aoyama Castle | Trenches | 2015 | Ogawamachi | 2015 |
| Aoyama Castle (Nagato) | Trenches
Stone walls | 2021 | Shimonoseki | 2021 |
| Aoyama Castle (Omi) | Trenches | 2021 | Higashi-Oumi | 2021 |
| Aoyama Yashiki (Mikawa) | | 2023 | Okazaki | 2023 |
| Ara Castle (Ina) | Trenches | 2022 | Ina | 2022 |
| Ara Castle (Murakami Clan Fort Network) | Trenches | 2021 | Ueda | 2021 |
| Aragaito Fort | Trenches | 2020 | Matsumoto | 2020 |
| Arahorinaiki Yashiki | | 2023 | Nagano | 2023 |
| Arai Castle | | 2020 | Matsumoto | 2020 |
| Araihara Castle | Trenches | 2023 | Takayama | 2023 |
| Araino Castle (Mikawa) | | 2023 | Okazaki | 2023 |
| Arako Castle | | 2020 | Nagoya | 2020 |
| Arashi Castle | Trenches | 2020 | Shiojiri | 2020 |
| Aratame Castle | Water moats | 2023 | Sakata | 2023 |
| Arato Castle | Stone walls | 2008 | Chikuma | 2008 |
| Aratoshou Castle | Trenches | 2021 | Chikuma | 2021 |
| Arayama Castle | | 2019 | Nakanoto | 2019 |
| Arikoyama Castle | Trenches
Samurai homes
Castle town
Stone walls | 2013 | Toyooka | 2013 |
| Aruga Castle | Trenches | 2020 | Suwa | 2020 |
| Asaba Castle | Trenches
Bridges | 2016 | Kanra | 2016 |
| Asada Castle (Chikuma) | | 2020 | Matsumoto | 2020 |
| Asahara Yakata | | 2022 | Higashi-Ōmi | 2022 |
| Asahi Castle (Chikuma) | Trenches | 2019 | Asahi | 2019 |
| Asahi Castle (Minochi) | | 2021 | Nagano | 2021 |
| Asahi Castle (Owari) | Trenches
Main keep | 2019 | Owari-Asahi | 2019 |
| Asahi Moated Settlement | Trenches | 2024 | Kiyosu | 2024 |
| Asahiyama Castle | Trenches
Stone walls | 2021 | Nagano | 2021 |
| Asahiyama Castle (Kai) | Trenches | 2022 | Hokuto | 2022 |
| Asaka Castle (Chikuma) | Trenches
Stone walls | 2021 | Chikuhoku | 2021 |
| Asakura Yakata | Trenches
Water moats
Gates
Stone walls | 2023 | Fukui | 2023 |
| Asama Palace | Stone walls | 2021 | Matsumoto | 2021 |
| Asama Yakata | | 2020 | Matsumoto | 2020 |
| Asano Castle | Water moats | 2025 | Ichinomiya | 2025 |
| Ashigara Castle | Trenches | 2010 | Oyama | 2010 |
| Ashikaga Masauji Yakata | Trenches | 2023 | Kuki | 2023 |
| Ashikagashi Yakata | Water moats
Gates | 2007 | Ashikaga | 2007 |
| Ashimori Jin'ya | Samurai homes
Water moats
Castle town
Bridges
Stone walls | 2022 | Okayama | 2022 |
| Ashinoya Jin'ya | Trenches
Walls
Palace
Gates
Stone walls | 2023 | Kōta | 2023 |
| Asonuma Castle | Trenches | 2017 | Sano | 2017 |
| Asou Castle (Mikawa) | Stone walls | 2024 | Okazaki | 2024 |
| Asouko Castle (Mikawa) | | 2024 | Okazaki | 2024 |
| Asukayama Castle | | 2022 | Tokyo | 2022 |
