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Japanese Castles Quiz

Ten questions drawn from 20. Every answer is explained and sourced.

Useless’s field notes: on the castle keep

Kumamoto’s stone walls get steeper the higher you climb. So does my maths homework.

— U. (tap me for another)

Thanks for visiting. Next time you see a white keep with curved roofs, count its floors.

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About the network

japanese-castles.forts.im is part of the ReallyByte network, run by REALLYBYTE, based in the Isle of Man. General information, checked against the sources listed: UNESCO, the Japan National Tourism Organization (JNTO), the Japan Tourism Agency, the Matsumoto, Kumamoto and Nagoya Castle websites, the Osaka Castle Museum and GOV.UK. Every fact was checked on 3 Nov 2026, and where sources disagree we show each one. Always check opening times, access and conditions with the site before you go. Not affiliated with UNESCO, the Japan National Tourism Organization (JNTO), the Japan Tourism Agency, Himeji Castle, Matsumoto Castle, Kumamoto Castle, the Osaka Castle Museum, Nagoya Castle, Matsumoto City, Kumamoto City, Nagoya City, Osaka City, the Japanese government, the UK government or any museum. Their names, and the names of the places they look after, are used only to identify the places and sources discussed. All pictures are our own simplified drawings: not reconstructions, not scale plans, and not copied from any site plan, map, guidebook or photograph. As an Amazon Associate I earn from qualifying purchases. No cookies; privacy-friendly visit counts via GoatCounter. Privacy | Contact | Support this site

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