A sacred place of prayer, Pura Samuan Tiga will give you a better understanding of the area's religious beliefs. Take a moment to learn about the significance of this site to the local people.
You'll have no end of sightseeing choices in Ubud. Pura Samuan Tiga is a great place to kick off here, but there are plenty of other worthwhile spots to experience. Ubud Monkey Forest, Ubud Traditional Art Market, and Ubud Palace are not far from the place of worship and will fill in your day nicely.