Ta Prohm is a temple at Angkor, Cambodia, built in the Bayon style largely in the late 12th and early 13th centuries. Located approximately one kilometre east of Angkor Thom and on the southern edge of the East Baray, it was built by King Jayavarman VII as a Mahayana Buddhist monastery and university. Unlike most of the other Angkor temples, Ta Prohm has been left in much the same condition in which it was found.
You can watch this excellent documentary:
City of the Gods - Angkor, Cambodia
for the architecture and cultural history of Angkor.