The Mausoleum of First Qin Emperor Qin Shi Huang is a UNESCO World Heritage Site Museum at the northern foot of Lishan Mountain in Xi'an, Shaanxi. Built from 246 BC for 38 years, it's the grandest imperial tomb in China, covering 56 square kilometers.

Constructed for Qin Shi Huang, China's first emperor, the mausoleum features a 76-meter-tall tomb mound and an underground palace unexcavated yet. Its layout mirrors the Qin capital Xianyang, with inner and outer cities.

Surrounded by over 200 pits, the site includes the world-famous Terracotta Army, thousands of life-sized warriors guarding the tomb. It stands as a masterpiece of ancient Chinese engineering and a timeless symbol of China's first unified empire.