The Terra Cotta Warriors and Horses are one of the most significant archeological discoveries in the 20th century. The excavation work is on-going at this site, which is around l. 5 kilometers east of Emperor Qin Shihuang's missed by any visitor to China. Upon ascending the throne at the age of 13 in 246 BC, Qin Shihuang, later the first feudal emperor in the Chinese history, began to work for his mausoleum. It took ii years to finish. It is speculated that many buried treasures and sacrificial objects had accompanied the emperor in his afterlife. A group of peasants uncovered some pottery while digging for a well nearby the royal tomb in 1974. It caught the attention of archeologists immediately, who, after massive on-site excavations, claimed that the Terra Cotta Warriors and Horses had been associated with the Qin Dynasty. The museum covers an area of 16,300 square meters, divided into three sections, i.e.No.1 Pit, No.2 Pit, and No.3 Pit respectively. No. I Pit, the largest of the three, was first opened to the public on China's National Day, 1979. No. 2 Pit, found in 1976, is 20 meters northeast of No. 1 Pit. It contained over one thousand warriors and 90 chariots. It was unveiled to the public in l994. Archeologists came upon No. 3 Pit also in 1976, 25 meters northwest of No. I Pit. It looked like the command center of the armed forces. It went on display in 1989, with 68 warriors. a war chariot and four horses. Up to now, over 7,000 pottery soldiers and horses, chariots, and weapons have been unearthed from these pits. Most of them have been restored to their former grandeur. The Terra Cotta Warriors and Horses were listed by UNESCO in 1987 as one of the world cultural heritages.