Angkor is a vast complex of temples and other archaeological structures rising out of the jungle in northern Cambodia. It covers an astonishing 400 square kilometers, or 154 square miles. To put this in perspective, this is an area equivalent to the entire eastern half of Salt Lake City from 600 North to I-215 in the south. This massive site was the home to arguably Southeast Asia’s greatest civilization, the Khmer Empire, from the 9th to the 15th centuries.