Angkor Wat is a temple complex in Cambodia and the largest religious monument in the world, on a site measuring 162.6 hectares (1,626,000 m2; 402 acres). It was originally constructed as a Hindu temple of god Vishnu for the Khmer Empire, gradually transforming into a Buddhist temple towards the end of the 12th century. It was built by the Khmer King Suryavarman II in the early 12th century.