Wat Pho
Temples abound here in Bangkok, but this one has a few extra things that make it worthy of its own post: A Thai massage school where we got a wonderful mind-numbing traditional Thai massage for $9. Slightly fewer tourists (few enough not to get shoved around by crazed selfie-taking fiends). Free bottled water. And cats.
Wat Pho is most famous for housing a giant Reclining Buddha. Go around to the back, and you'll discover the source of the mysterious clinking sounds that echo around this chamber.