My favorite thing about traveling is the cultural nuances. I love that the Vietnamese still where cone hats and Ao Dais (traditional dress). It's also a great place for history buffs.
Cao Dai Temple
Cao Dai is a religion unique to Vietnam. It incorprates doctorine from Christianity, Buddhism, Islam, and Confucianism just to name a few. I really don't know much about it, but their temples certainly are colorful.