Rajasthan is the largest state of the Republic of India in terms of area. It encompasses most of the area of the large, inhospitable Great Indian Desert (Thar Desert), which has an edge paralleling the Sutlej-Indus river valley along its border with Pakistan. The state borders Pakistan to the west, Gujarat to the southwest, Madhya Pradesh to the southeast, Uttar Pradesh and Haryana to the northeast and Punjab to the north. Rajasthan covers an area of 132,150 sq mi or 342,269 km˛.
The state capital is Jaipur. Geographical features include the Thar Desert along north-western Rajasthan and the termination of the Ghaggar River near the archaeological ruins at Kalibanga, which are the oldest in the subcontinent discovered so far.
One of the world's oldest mountain ranges, the Aravalli Range, cradles the only hill station of Rajasthan, Mount Abu, and its world-famous Dilwara Temples, a sacred pilgrimage for Jains. Eastern Rajasthan has two national tiger reserves, Ranthambore and Sariska, as well as Keoladeo National Park near Bharatpur, once famous for its bird life.
Rajasthan was formed on 30 March 1949, when all erstwhile princely states ruled by Rajputs, known as Rajputana, merged into the Dominion of India. The only difference between erstwhile Rajputana and Rajasthan is that certain portions of what had been British India, in the former province of Ajmer-Merwara, were included. Portions lying geographically outside of Rajputana such as the Sumel-Tappa area were given to Madhya Pradesh.