As a visitor to the Golden fort one of the most interesting buildings to visit besides the Raj Mahal is the complex of Jain Temples.
Jaisalmer was a prominent center along the ancient caravan trade route that crossed the Thar Desert and connected India/East with the West. Though it was under Hindu rule, it was the Jain traders who made Jaisalmer prosperous with trade activities and these temples stand testament to their success.
Here's a few photos of the amazing temple complex:
These are extremely intricate buildings that are as much a piece of art/sculpture as these are amazing examples of traditional Dilwara style architecture.