2 castles in this category.
Japan's first Western-style star-shaped fort, built in 1864 in Hakodate. Famous as the final battleground of the Boshin War and now a beloved cherry blossom viewing spot.
One of only two Western-style star-shaped forts (goryokaku) in Japan, built in 1867 in Saku, Nagano. Smaller than Hakodate's Goryokaku, it was built as the domain headquarters of the Sanada-affiliated Matsudaira clan.
Data on this site comes from Wikidata, Wikimedia Commons, OpenStreetMap, the National Land Numerical Information service (MLIT), the Agency for Cultural Affairs national database of designated cultural properties, and the official site of each castle. Checked 2026-08-22.
A blank or missing line means we found no record in those sources — not that the castle lacks the thing. Admission fees, opening hours and access change without notice; please confirm with the official site before travelling.