Travelers are voting Hachiōji Castle, Ueda Castle and Taki-no-jō Castle as the best of 5 castles in Tokyo. There are 1 castle in Tsukuba a city just 32 km from Tokyo and 3 castles in Koga which is 34 km distant. The most popular of these are Sekiyado Castle in Tsukuba and Kanayama Castle in Koga. You can find 20 castles in Kanto Region and 137 castles in the country of Japan. Our members favorite in Kanto Region is Matsumoto Castle and Himeji Castle is the top pick in Japan. Want more? Check out our map of castles in Tokyo.