Rajasthan is India's largest state by area (342,239 square kilometres (132,139 sq mi) or 10.4% of India's total area). It is located on the western side of the country, where it comprises most of the wide and inhospitable Thar Desert (also known as the "Rajasthan Desert" and "Great Indian Desert") and shares a border with the Pakistani provinces of Punjab to the northwest and Sindh to the west, Along the Sutlej-Indus river valley. Elsewhere it is bordered by the other Indian states: Punjab to the north; Haryana and Uttar Pradesh to the northeast; Madhya Pradesh to the southeast; and Gujarat to the southwest.
Its features include the ruins of the Indus Valley Civilization at Kalibanga; the Dilwara Temples, a Jain pilgrimage site at Rajasthan's only hill station, Mount Abu, in the ancient Aravalli mountain range; and, in eastern Rajasthan, the Keoladeo National Park near Bharatpur, a World Heritage Site known for its bird life. Rajasthan is also home to two national tiger reserves, the Ranthambore National Park in Sawai Madhopur and Sariska Tiger Reserve in Alwar. The state was formed on 30 March 1949 when Rajputana - the name adopted by the British Raj for its dependencies in the region - was merged into the Dominion of India. Its capital and largest city is Jaipur, located on the state's eastern side.
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.
The northwestern portion of Rajasthan is generally sandy and dry. Most of this region is covered by the Thar Desert which extends into adjoining portions of Pakistan. The Aravalli Range does not intercept the moisture-giving southwest monsoon winds off the Arabian Sea, as it lies in a direction parallel to that of the coming monsoon winds, leaving the northwestern region in a rain shadow. The Thar Desert is thinly populated; the town of Bikaner is the largest city in the desert. The Northwestern thorn scrub forests lie in a band around the Thar Desert, between the desert and the Aravallis. This region receives less than 400 mm of rain in an average year. Temperatures can exceed 45 °C in the summer months and drop below freezing in the winter. The Godwar, Marwar, and Shekhawati regions lie in the thorn scrub forest zone, along with the city of Jodhpur. The Luni River and its tributaries are the major river system of Godwar and Marwar regions, draining the western slopes of the Aravallis and emptying southwest into the Great Rann Of Kutch wetland in neighbouring Gujarat. This river is saline in the lower reaches and remains potable only up to Balotara in Barmer district. The Ghaggar River, which originates in Haryana, is an intermittent stream that disappears into the sands of the Thar Desert in the northern corner of the state and is seen as a remnant of the primitive Saraswati river.
Rajasthan attracted 14 percent of total foreign visitors during 2009–2010 which is the fourth highest among Indian states. It is fourth also in Domestic tourist visitors. Tourism is a flourishing industry in Rajasthan. The palaces of Jaipur and Ajmer-Pushkar, the lakes of Udaipur, the desert forts of Jodhpur, Taragarh Fort (Star Fort) in Bundi, and Bikaner and Jaisalmer rank among the most preferred destinations in India for many tourists both Indian and foreign. Tourism accounts for eight percent of the state's domestic product. Many old and neglected palaces and forts have been converted into heritage hotels. Tourism has increased employment in the hospitality sector.
Rajasthan is famous for its forts, carved temples, and decorated havelis, which were built by Rajput kings in pre-Muslim era Rajasthan. Rajasthan's Jaipur Jantar Mantar, Dilwara Temples, Chittorgarh Fort, Lake Palace, miniature paintings in Bundi, and numerous city palaces and havelis are part of the architectural heritage of India. Jaipur, the Pink City, is noted for the ancient houses made of a type of sand stone dominated by a pink hue. In Bundi, maximum houses are painted blue. At Ajmer, there is white marble Bara-dari on the Anasagar lake. Jain temples dot Rajasthan from north to south and east to west. Dilwara Temples of Mount Abu, Ranakpur Temple dedicated to Lord Adinath in Pali District, Jain Temples in the fort complexes of Chittor, Jaisalmer and Kumbhalgarh, Lodurva Jain Temples, Mirpur Jain Temple, Sarun Mata Temple kotputli, Bhandasar and Karni Mata Temple of Bikaner are some of the best examples.
Rajasthan is also noted for its national parks and wildlife sanctuaries. There are four national park and wildlife sanctuaries: Keoladeo National Park of Bharatpur, Sariska Tiger Reserve of Alwar, Ranthambore National Park of Sawai Madhopur, and Desert National Park of Jaisalmer.
Ranthambore National Park is known worldwide for its tiger population and is considered by both wilderness lovers and photographers as one of the best place in India to spot tigers. At one point, due to poaching and negligence, tigers became extinct at Sariska, but five tigers have been relocated there. Prominent among the wildlife sanctuaries are Mount Abu Sanctuary, Bhensrod Garh Sanctuary, Darrah Sanctuary, Jaisamand Sanctuary, Kumbhalgarh Wildlife Sanctuary, Jawahar Sagar sanctuary, and Sita Mata Wildlife Sanctuary.