100 Places To See In Your Lifetime-Heaven On Earth#26-Angkor Wat,Cambodia-"The largest religious complex in the world, this archaeological and architectural treasure was built in the 12th century A.D. by King Suryavarman II in what was then the capital of Khmer Empire, now knows as Cambodia. The temple of Angkor Wat was dedicated to the Hindu god Vishnu, and the outer gallery walls contain the longest bas-relief in the world, a depiction of tales from Hindu mythology.