The gate of Angkor Thom, Cambodia

The principal temple of the Angkorian region, Angkor Wat, was built between 1113 and 1150 by King Suryavarman II. Suryavarman ascended to the throne after prevailing in a battle with a rival prince. An inscription says that, in the course of combat, Suryavarman leapt onto his rival's war elephant and killed him, just as the mythical bird-man Garuda slays a serpent. [Source]