The current donjon and some other structures of the castle were reconstructed in 1966 to boost local tourism and to function as a local museum. The current donjon features five tiers and five stories, with a lower ground floor; it also houses an exhibition area. Many of the yagura date from the same time, although the Tatsumi Yagura was added in 1990. Literature Notes External links home page Jcastle Profile Karatsu City Tourism Information - Ruins Of Karatsu Castle Karatsu City home page Japanese Castle Explorer - Karatsu Castle (English) Castles in Saga Prefecture Museums in Saga Prefecture History museums in Japan Mizuno clan Ogasawara clan Ogyū-Matsudaira clan Ōkubo clan