Pura Ulun Danu Batur is located on the edge of Lake Batur, 1 hour from Ubud. It's a popular temple for Balinese Hindus and dedicated to the goddess of water, fertility and abundance. The views of the lake and surrounding mountains are beautiful! I would add this to your list if you're visiting Kintamani or doing the Mount Batur trek in the same area.

Wear clothes that cover your shoulders to be able to enter the temple area. When you pay the entrance fee, you will get a sarong to cover pants.