The Yellow River Railway Bridge, also known as Zhongshan Bridge, is located at the foot of Baita Mountain in the north of Lanzhou City and in front of Jinchengguan. It is one of the landmark buildings in Lanzhou. Tieqiao was built in the late Qing Dynasty and is the first perennial bridge built on the Yellow River. Therefore, it has the reputation of "the first bridge in the world". The length of the bridge is more than 200 meters, the width is 7-8 meters, the body of the black iron bridge is very elegant and simple. It is said that the iron bridge was built in Germany at that time, especially all the construction materials, including a rivet, an iron bar and even the paint used for brushing the iron bridge after it was built, all come from Germany. Germany has guaranteed the quality of the railway bridge, which has remained above the Yellow River for a hundred years. Watching and visiting the railway bridge, besides walking close to it personally, it is also a good choice to observe the whole view of the railway bridge on the Baita Mountain and Lanzhou city.