The Terracotta Army is one of the most famous attractions in Xi'an. It is a collection of life-sized statues of soldiers, horses, and chariots that were buried with the first emperor of China, Qin Shi Huang. The statues were discovered in 1974 and are now a UNESCO World Heritage site. Visitors can marvel at the intricate details of the statues and learn about the history and significance of this archaeological wonder.