I have to say the white temple is the most beautiful structure I have seen in a long time (and I've been to places like Paris, Florence, Athens etc...)
The perfect and original architecture of this temple is something that deserves nothing but admiration and praising. It is only natural that the place gets packed with tourists, who wouldn't want to visit something so gorgeous?
By the way, did you know that it was damaged by an earthquake five years ago and almost got demolished because of safety reasons? What a pity would that be...