Sunrise at the Angkor Wat temple complex in Cambodia. Whilst the sunrise visit is a very touristy thing to do, it is beautiful and there are less tourists there if you start at sunrise. There is a large crowd at dawn but it can become obnoxiously crowded as the day goes on. With that said, this is an amazing place to visit. There’s loads of history here from the cultural, to the spiritual, to conspiracy theories if you’re into that sort of thing. It is a functioning temple therefore you do have to dress and show necessary respect during your visit. Much more information is in the links below.

https://en.wikipedia.org/wiki/Angkor_Wat

http://whc.unesco.org/en/list/668

http://www.livescience.com/23841-angkor-wat.html