The original Bali religion, based in animism and ancestor worship, is at least 4000 years old. Over the centuries, it has been transformed by Hindu, Buddhist and Japanese influence until it is something unique to the Balinese.

The first temples of the Sacred Monkey Forest may be more than 1000 years old. They have been replaced and rebuilt over the centuries because the volcanic island is subject to movement and typhoons.

Inside the Forest, a Dragon Bridge leads to the sacred bathing pools fed by river and spring. The temples and bathing pools inside the Sacred Monkey Forest are still in use by the local village.