The city of Jaisalmer is also known for its old particular constructions, better known as havelis. Among them, Salim Singh ki Haveli and Nathmal Ji ki Haveli are the most popular ones. There are other monuments like Bada Bagh (Royal Cenotaphs), Gadisar Lake, Ludarwa, which are also important because of their distinct and individual architecture. The architecture of Jaisalmer is known for its beautiful carvings, engravings and designs on the yellow sandstone, locally found here.