The Terra-Cotta Warriors were accidentally discovered by Chinese peasants while digging a well in 1974. The museum comprises three buildings each spanning a pit. Pit 1, 2 and 3, respectively in order of discovery, are the main formation with a total area of 22,780 square meters (Approx. 5 acres) and 1,000 life-size terra-cotta warriors, horses and chariots.

The first site was excavated in 1974. Although much of the site had been looted soon after it was built, archaeologists discovered 6,000 pottery figures. This oblong shaped site is 689 feet long, 197 feet wide. The trenches that contain the soldiers are 14.8 to 21.3 feet deep. The actual bodies of the soldiers were formed out of terra cotta clay. Each soldier was baked in a kiln. The positioning of the soldiers in the oblong shape shows an actual battle formation of the troops. These warriors were dressed and ready for battle. They carried spears and various other combat weapons. Each warrior is wearing an army uniform which distinguishes the soldier's rank. The soldier's uniforms were painted either red or green. They also wore either brown or black armor. Different types of warriors include bowman, infantrymen, and among these soldiers are six chariots. Each soldier has a distinct facial expression. Even the horses found at this site have different poses. Both the hands and the heads of the soldiers are detachable. These pieces of the body were carefully crafted and painted separately. The purpose of this was to provide the soldier with individuality and uniqueness. This also shows the quality of Chinese art during this time. These soldiers were made to be naturalistic. The height of the normal soldiers ranges from 5 ft. 8 in. to 6 ft. 2.5 in. Those that rode the chariots were 6 ft. 2.5 in. The commanders were the tallest out of all the soldiers. They stood 6 ft. 5 in. Clearly height represented the importance of the officer.

The second excavation occurred in May of 1976. This pit contains 1,400 warriors with horses. It is 64,000 square feet in area. Pit number two differs greatly from the first pit. The battle formation was square. This pit contains sixty-four chariots. It has divided groups which include infantrymen, cavalrymen and even commanders to guide the troops. This display of soldiers gives insight into the work that went into the Chinese army. Long distance battles had to be fought by using many chariots. The facial expressions of the men in this pit are also very different from those men in the first pit.

The third pit was discovered in 1980. This pit is the smallest out of the three discovered. It contains only one chariot, six warriors, and a small amount of weapons. This room is thought to be a group of special commanders. A fourth pit was also discovered. This room is bare. This room is probably empty because the workers did not complete the warriors in time for Qin's death.

In December, 1987 The Qin Shi Huang's Mausoleum and his Terracotta Army was listed in the Chronology of Recognition of World Heritages in China.