I visited this amazing WHS in February 2011. Angkor Wat is actually a temple complex of around 400km2 (bigger than my home country). There are outstanding sunrise and sunset moments to enjoy and it is very easy to get "templed out" after 2-3 days of intense exploration through jungle temples, major temples, minor temples, etc. The relationship between nature and the temple of Ta Phrom can be clearly seen as you try to understand whether the jungle trees or the temples came first. Some trees can still be seen growing on the temples or indeed through the temples with roots coming out of everywhere. You will surely feel observed while walking through the Bayon Temple, with the hundreds of sculpted faces smiling at you. Another one of my favourite WHS, no doubt about that.