Visit Tainan, Taiwan's first capital and explore historical landmarks starting at the Anping district's Eternal Golden Castle, an immense military fort built to prevent Japanese invaders. See the enchanting Anping Tree House, that served as a warehouse in the early days of the city. Drop by the Wushantou Reservoir, that is formed by over 30 intersecting rivers. Before the tour ends, get to stroll around the Xinhua Old Street, a good spot to buy food and other local specialties since the 1920s.