Shui Guan is a five span bridge type architecture, built in the Ming and Yongle years. The water is 75.5 meters in length and 12.15 meters high. To control the river valley, east to Taiping Village, West to Huang Ya Guan City. There are pallets, perforations, iron fences, water, and horses. Wartime wartime enemy soldiers, in peacetime to collect taxes. Today, only the ruins of the north wall are also known as Bagua City, which is named as "Eight Diagrams Street" in the city. The Bagua city is the the Great Wall yamen, the location of the warehouse, the east facing the river, the West leaning on the hat top mountain, with the shape of the mountain shape, the irregular knife shape, from the east to the west is composed of three parts of the urn City, the outer city and the inner city. The East, West and south walls of the city walls are paved with three main gates and towers. The north wall is built without a gate because of its defensive needs. The Arctic Pavilion, commonly known as Guan Yu Temple, is built on the city platform.