The Yi Tzai Golden Castle was originally built to resist the Japanese invasion during the Peony Suffix Event. Built by the Chinese but designed by a French engineer, the Yi Tzai Golden Castle was the first western style fort established in Taiwan. Occupying 3 hectares of land, the building is in the shape of a square. Equipped with British Armstrong Cannons, the Yi Tzai Golden Castle also symbolizes a great leap forward towards the modernization of Taiwanese military defense. Although much of the fort was ruined until its historical importance was recognized, reconstruction and restoration was carried out and now the Yi Tzai Golden Castle is ranked as a class one historical monument. After the restoration, the original scale of the Yi Tzai Golden Castle can be generally seen. With the arch castle gate and a carpet of what used to be the exercising field, the Yi Tzai Golden Castle is a great venue of historical importance.