One of the great wonders of the ancient world, Angkor Wat is the largest religious structure on earth. Construction began during the reign of Suryavarman II (reigned 1113-c.1150) and took about thirty years to complete. A Hindu temple-city dedicated to Vishnu, Angkor Wat might also have served as a mausoleum for the king after his death. It is the most famous of all the temples of Angkor, receiving thousands of visitors each day. Buddhist monks have maintained the temple since the 16th century.