Gaddi Sagar Lake
Southeast of the city walls lies a manmade reservoir by the name of Gadi Sagar Lake. This freshwater lake, built in 1637 by then ruler Maharawal Gadsi Singh, served as the main water supply of the city until just a few decades ago. Its massive basin would collect rainwater from the monsoons, thus inviting a crowd of migrants towards its waters.
As migrants flocked towards the lake, they built numerous small temples and shrines, many of which are still around today. Straddling the road leading to Gadi Sagar is a 14th century gateway by the name of Tilon-ki-Pol. Rumored to have been constructed by a well-known prostitute, this gateway now stands underneath a Krishna temple so as not to be torn down by the king.
These days, Gadi Sagar Lake no longer serves as the primary source of water for the resident of Jaisalmer, and for good reason. Though it boasts a spectacularly diverse avian community in winter, this freshwater basin dries up right before monsoon, leaving boats stranded and exposing the underlying crackly terrain.