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