Ruins at Angkor Wat, Cambodia. The temples at Angkor are spread out over some 40 miles around the village of Siem Reap, about 192 miles from the Cambodian capital, Phnom Penh. They were built between the eighth and 13th centuries and range from single towers made of bricks to vast stone temple complexes. Regarded as the supreme masterpiece of Khmer architecture, it is a huge pyramid temple built by Suryavarman II between 1113 and 1150. It is surrounded by a moat 570 feet wide and about four miles long. The bas-relief carvings are of the highest quality and the most beautifully executed in Angkor..