2. The Caves
Not all of the great attractions of Laos are located above ground. Some are subterranean. The Pak Ou Caves, located just north of Luang Prabang, are perhaps the most famous in the country and one of the top sights of Laos. Carved by time out of limestone, the caves are adorned with hundreds of Buddha sculptures in various poses and sizes. Much of the cave is visible from the mighty Mekong River and can be accessed through a series of carved limestone steps. In stark contrast to the Buddhist-themed Pak Ou Caves, the Vieng Xai Caves were primarily used in the Vietnam War to house the Communist military. Up to 23,000 people crammed into this incredible underground network that is now open to visitors.