An artists conceptualization of one of the temples at Angkor Thom as it once looked, before it became ruins.

Angkor Thom (Khmer: អង្គរធំ; literally: "Great City"), located in present day Cambodia, was the last and most enduring capital city of the Khmer empire. It was established in the late twelfth century by King Jayavarman VII. It covers an area of 9 km², within which are located several monuments from earlier eras as well as those established by Jayavarman and his successors. At the centre of the city is Jayavarman's state temple, the Bayon, with the other major sites clustered around the Victory Square immediately to the north.

Angkor Thom was established as the capital of Jayavarman VII's empire, and was the centre of his massive building programme. One inscription found in the city refers to Jayavarman as the groom and the city as his bride.

Maquette du Bayon datant de 1899 présentée dans l'exposition Angkor Thom (musée Guimet)