Angkor
Angkor is one of the most important archaeological sites in South-East Asia. Stretching over some 400 km2, including forested area, Angkor Archaeological Park contains the magnificent remains of the different capitals of the Khmer Empire, from the 9th to the 15th century. They include the famous Temple of Angkor Wat and, at Angkor Thom, the Bayon Temple with its countless sculptural decorations. UNESCO has set up a wide-ranging programme to safeguard this symbolic site and its surroundings.
http://whc.unesco.org/en/list/668
Angkor was the capital of the Khmer Empire that evolved from the 9th century north of the lake Tonle Sap. The Empire encompassed much of south-east Asia, and it has had a lot of political and cultural influence on the whole region until its downfall in the 14th century. Because of this influence of the Khmer Empire and because a number of artistic masterpieces are still left, the site was placed on the World Heritage List.
The first Khmer capital erected here was Roluos. Over the next centuries, the various Khmer rulers built other capital cities for themselves in this area. It was Suryavarman II who built Angkor Wat in the early 12th century, the greatest of all Khmer monuments. Jayavarman VII was responsible for building Angkor Thom, including the Bayon (dedicated to Buddha).
http://www.worldheritagesite.org/sites/angkor.html
