Angkor Wat temple is located in Cambodia at Siem Reap province. It is one of the largest religious monuments in the world and a symbol of Cambodian national pride, even appearing on the country’s flag. Angkor wat has established by the king Soriya vararman II in 9th century and continues build it by king Javarman VII until the 15th century that is right we call it the gold era of "Khmer Empire". That is well-known around world until now.

More Info: whc.unesco.org