Angkor Temple is the biggest attraction for tourist, the best is to go very early morning to see the sunrise over Angkor and also for a better temperature because you will walk a lot. But for me, I think Bayon temple and its gates are more beautiful. There are so many things to see that you need at least 3 days. I came here long ago when they use to clean the landmines and restore temples, it has changed a lot everything the town, the people, but it is a nice change.