Karatsu, Saga
Due to its proximity to mainland Asia, Karatsu has long been known as a stopover to Korea and China.Under ritsuryō, the current city area was part of the Hizen Province. In 1591, on the coast of the northern part of the city (formerly the town of Chinzei), Nagoya Castle was constructed. The following year, it became the location from which the Imjin War was launched by Toyotomi Hideyoshi. In the middle of 1593, Terasawa Hirotaka created the Karatsu domain and began governing it. In 1602, replacing Nagoya Castle, Karatsu Castle was constructed in what is now the heart of Karatsu. The tower of Karatsu Castle was built in 1966 .
Hikone Castle
When the Meiji era began in 1868, many castles were scheduled to be dismantled, and only a request from the emperor himself, touring the area, kept Hikone Castle intact. Today it remains one of the oldest original-construction castles in Japan. The main keep of Hikone Castle was designated a National Treasure by the Ministry of Education, Science, Sports and Culture in 1952. Hikone Castle also has several parts which are designated Important National Cultural Assets: Umaya (Stable), Tenbin Yagura (Balance Scale Turret), Taikomon Yagura (Drum Gate Turret) and Nishinomaru Sanju Yagura (West Bailey Three-story Turret).