At the other extremity of the lake, there is a small zoo where local animals can be seen. It is located under the trees and the walk is quite enjoyable.
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The Sikh temple in Rewalsar.
Another part of the Tibetan monasteries here.
The Hindu temple in Rewalsar.
Tsopema Nyingmapa Monastery
A Tibetan retreat center founded by Dudjom Rinpoche. It is the oldest monastery at the lake.
Padmasabhava Cave
A cave where Guru Rinpoche meditated, contains a number of shrines and a large statue on the guru. En route will pass a small nunnery and meditation caves. The path is steep in parts, but well paved. The cave is inside of the houses, so you have to go through one of the doors of the houses there.
A 2-hr walk, passing some Buddhist caves (see above) and lakes (if you go via Sar) en route from Rewalsar.