The archeological complex of Angkor Wat is simply stunning. Incredibly spread out, it requires a few days and a good guide to be explored, and even then the impression is to have just scratched the surface. Due to the presence of Buddhist monks in most of the temples, it's important to dress modestly and behave in a respectful way.
The complex is incredibly photogenic and calls to be photographed. These are just a few of the best sights.