Vat Phu, the Temple of the Mountain, is an exceptional historic site bringing a sacred mountain, a group of temples, an Old City on the banks of the Mekong and an unspoilt natural environment together. Vat Phu, which was venerated by all Khmer kings and is still honoured by the people of Laos, was recognized as a Unesco World Heritage Site in 2001. Even though it is well known to large.