The 2,200 year-old wonder was part of the Tomb of Qinshihuang, the first emperor of China. It is located in suburb of Xi'an and was discovered when local farmers were digging a well nearby. Three exhibition halls house the continuing excavation of an army of 7,000 terra-cotta soldiers and horses that guard the tomb of Qinshihuang. Terra-cotta Museum in Xi'an covers an area of 14,000 square meters and contains 6,000 life-size terra-cotta warriors and horses.Museum in Xi’an and marveled at the underground wonders.