Rajasthan is a northern Indian state bordering Pakistan. Its palaces and forts are reminders of the many kingdoms that historically vied for the region. In its capital, Jaipur (the "Pink City"), are the 18th-century City Palace and Hawa Mahal, a former cloister for royal women, fronted by a 5-story pink-sandstone screen. Amer Fort, atop a nearby hill, was built by a Rajput prince in the early 1600s. The geographic features of Rajasthan are the Thar Desert and the Aravalli Range, which runs through the state from southwest to northeast, almost from one end to the other, for more than 850 kilometres (530 mi). Mount Abu lies at the southwestern end of the range, separated from the main ranges by the West Banas River, although a series of broken ridges continues into Haryana in the direction of Delhi where it can be seen as outcrops in the form of the Raisina Hill and the ridges farther north. About three-fifths of Rajasthan lies northwest of the Aravallis, leaving two-fifths on the east and south direction.