Anping Castle, located in Tainan City, Taiwan Province, was once the center of its rule when the Dutch occupied it. It was called "Anping City", "Taiwanese City". After Zheng Chenggong recovered Taiwan, he also used it as his residence. Anping Castle, first built in 1624, is the oldest castle in Taiwan. The beautiful scenery of the castle red tile and the setting sun is called "peaceful sunset". It is one of the eight sceneries in Taiwan. In fact, the castle has become a relic with only ruins and broken walls. The existing buildings are all rebuilt in the later stage, but they have also experienced years of polishing and can be regarded as classics.