Jodhpur is the second largest city in the Indian state of Rajasthan. It was formerly the seat of a princely state of the same name, it was the capital of the kingdom known as Marwar. Jodhpur is a popular tourist destination, featuring many palaces, forts and temples, set in the stark landscape of the Thar desert The city is known as the Sun City for the bright, sunny weather it enjoys all year. It is also referred to as the Blue City due to the indigo tinge of the whitewashed houses around the Mehrangarh Fort. Jodhpur lies near the geographic centre of Rajasthan state, which makes it a convenient base for travel in a region much frequented by tourists. The old city of Jodhpur is surrounded by a thick stone wall.