Mount Wutai (五台山) is a holy Buddhist site with more or less 50 Buddhist temples and monasteries on the mountain. It's one of the four sacred mountains in Chinese Buddhism.
The Hanging Temple (懸空寺) was built into a cliff more than 1,400 years ago. It's famous not only because of its incredible architecture, but also because it's a temple integrating Confucianism, Buddhism, and Taoism.