Explore the Caves of Wat Tham Nam and Tham Sati
Wat Tham Nam and Tham Sati are some of the prettiest temple caves in Ratchaburi and since they are so close together, you might as well visit both of them at the same time. Wat Tham Nam, the bigger cave of the two, is a temple built inside a long water cave where they have turned each room into different prayer halls filled with Buddha images and they have constructed a walking path above the waterway to connect them all and for visitors to walk around. It will take you around 20 minutes to walk all the way from the entrance to the end and back. That is how big Wat Tham Nam is. It is pretty unique and definitely worth the long drive to visit.
Tham Sati, on the other hand, is a much smaller cave temple consisting of only one prayer hall and an altar but what makes this cave worth a visit is this gray-colored seated Buddha image carved straight from the mountain itself. It is a work of art and the more you stare at the image, the more you wonder how they did it. Both caves are open from 7 AM to 5 PM and they are both free to enter for both foreigners and Thais.