Introduction to the Ditan Archway: It is the first building at the west gate of the Ditan. When it was first built in the Ming Dynasty, it was called the "Taizhe Street" archway. When it was rebuilt during the Yongzheng period of the Qing Dynasty, it was changed to the "Guanghou Street" archway. When the emperor went to the altar to worship the earth, he first passed the archway and then entered the altar gate. The original archway was damaged due to natural conditions and historical reasons. The current archway was rebuilt by the park in 1990 according to the style built during the Qianlong period of the Qing Dynasty. The entire archway is 13.5 meters high, tall and majestic, with green glazed tiles. The colorful paintings are based on the saying of "Heavenly Dragon and Earthly Phoenix", with single phoenix and peony patterns. There are two words "Ditan" in the center of the front, and "Guangzhou" in the center of the back. Houjie" words.