I have featured this amazing place before but I think it is worth re-posting. Located in a part of Cambodia that was once the seat of the famous Khmer Empire, Angkor (meaning 'capital city' in Khmer) was the heart of this civilization that thrived from the 9th to 15th centuries CE. There are over one thousand different temples in Angkor of different sizes and scales, all of which have been restored as a landmark of historic Khmer architecture. The entire site is preserved as a UNESCO World Heritage Site, but even if you can't make the journey to Cambodia, here is a tour of Angkor's highlights.
Clancy's comment: What an extraordinary place. Two things stagger me about this place: the quality of construction, considering its age and the lack of modern day equipment, and the fact that it has survived centuries.
Trust me, it is one of the most interesting places to visit as a photographer.