This manmade lake was built by Anaji Chauhan (grandfather of Prithviraj Chauhan) during 1135-1150 AD. On its bank is a pleasant park, the Daulat Bagh, containing a series of marble pavilions erected in 1637 by Shah Jahan. One can witness the beautiful sunset while boating on Ana Sagar lake. Sprawling across 13 km, the pond captures the picturesque beauty of Ajmer. but acts as a source of livelihood for all the local people of this city. Right in the middle of the lake is an island which can be reached by a motor boat. There are several attractions around the Ana Sagar lake which add to its charm.