Karatsu Castle was built by Toyotomi Hideyoshi's vassal, Terazawa Hirotaka, and prospered as a castle town during the Edo period. Currently, a simulated main tower and a reconstructed watchtower have been built, and it is used as a tourist facility. Inside the main tower, there are exhibits about the history of Karatsu Castle and Karatsu pottery, making it a recommended spot for those interested in history and culture.
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