Entrance to the temple mountain Angkor Wat

The dominant scheme for the construction of state temples in the Angkorian period was that of the Temple Mountain, an architectural representation of Mount Meru, the home of the gods in Hindu mythology.

Mount Meru of Hindu traditions has clearly mythical aspects, being described as 84,000 Yojanas high, and having the Sun along with all its planets and stars in the Solar System revolve around it as one unit.
(A Yojana is a Vedic measure of distance used in ancient India. The exact measurement is disputed amongst scholars with distances being given between 6 to 15 kilometers.)