The Pak Ou Caves, located along the Mekong River in Laos, are an important Buddhist pilgrimage site. The caves are home to thousands of Buddha statues that have been left by devotees over the centuries. A visit to the caves provides a unique opportunity to explore this sacred site and appreciate the ancient art and religious history of Laos. To reach the caves, visitors can take a scenic boat ride along the Mekong River from Luang Prabang.