Visit the famous Havelis (mansions) known for their frescoes. Jaisalmer's strategic position on the camel terrain route bought it great wealth. The merchants grew prosperous and commissioned great havelis, or mansions, to flaunt their ever-growing status in society. Made of local golden-yellow sand stone and wood, some of the havelis are still in excellent condition. The most elaborate and magnificent of all the Jaisalmer havelis is the Patwaon Ki Haveli. Five Jain brothers built the Haveli between 1800 and 1860. Salim Singh Ki Haveli and Nathmal Ki Haveli are the other two havelis that are opened to visitors. Built in 1156 by the Bhati ruler, Jaisal, the fort here stands atop the 80 m high Trikuta hill. 3 walls and features 99 bastions surround the fort. Over the centuries, the golden sand stone fortress witnessed many battles between the Bhatis, the Mughals and the Rathores of Jodhpur. Within the fort complex lie the beautifully carved Jain Temples built between the 12th and 15th centuries. The ‘Maharawals’ (rulers) of Jaisalmer were devout Hindus but were tolerant of Jainism, and encouraged art and religion. There are 7 temples in the complex - Chandraprabhu, Parasnath, Shitalnath, Sambhavnath, Shantinath, Kunthunath and Rikhabdev Temple. The temples are all connected by a series of corridors and walkways. Close by is the Gyan Bhandar, a library founded in 1500 A.D. It houses priceless ancient manuscripts and other exhibits like astrological charts, besides the Jain equivalent of the Christian Shroud of Turin.