The design of Ta Prohm is that of a typical "flat" Khmer temple (as opposed to a temple-pyramid or temple-mountain, the inner levels of which are higher than the outer). Five rectangular enclosing walls surround a central sanctuary. Like most Khmer temples, Ta Prohm is oriented to the east, so the temple proper is set back to the west along an elongated east-west axis. The outer wall of 1000 by 650 metres encloses an area of 650,000 square metres that at one time would have been the site of a substantial town, but that is now largely forested. There are entrance gopuras at each of the cardinal points, although access today is now only possible from the east and west. In the 13th century, face towers similar to those found at the Bayon were added to the gopuras.