At the end of the Eastern Han Dynasty, Cao Cao and Ma Chao fought in Tongguan, and the name of Tongguan began to appear in history. After Du Fu's tour, he also wrote a poem, "A husband should pay attention to the important place, be narrow and allow a bicycle to ride, work hard and be brave." In order to consolidate their dominant position, rulers of past dynasties stationed heavy troops here and set up customs guards. Tongguan has been repaired many times since the Song and Ming Dynasties and is well preserved. There is a gatehouse built in the Ming Dynasty in Ximen, commonly known as the "Bridge House", which is magnificent. The wall of Tongguan City in Ming Dynasty, Tongguan still exists. There is a "first pass" about three miles outside the East Gate of Yadong, the old county of Tongguan, with the Yellow River in the north and the plateau in the south. It is the first level to guard Tongguan. The word "First Pass" at the east gate of the first pass and the word "Golden Steep Terrace" at the west gate of the first pass are inscribed by Qing Ganlong Imperial Pen, which are full of color and integrity. 5 yuan takes a bus from Weinan Bus Station to Tongguan County.
The famous scenic spots in Tongguan County include: Fotouya, Su Yang's Tomb and Yangzhen's Tomb in Tongguan.