Ajmer (pronounced [ədʒmeːr]) is the fifth largest city in the Indian state of Rajasthan and is the centre of the eponymous Ajmer District. According to the 2011 census, Ajmer has a population of around 551,360 in its urban agglomeration and 542,580 in the city. The city is located at a distance of 135 km from the state capital Jaipur and 391 km from the national capital New Delhi.Ajmer is surrounded by the Aravalli Mountains. It is a pilgrimage centre for the shrine of the Sufi Saint Khwaja Moinuddin Chishti and is also the base for visiting Pushkar (11 km), an ancient Hindu pilgrimage city, famous for the temple of Brahma.Prithviraj Chauhan (1149–1192 CE), of the Chauhan dynasty, ruled Ajmer along with Delhi during the latter half of the 12th century. He succeeded to the throne at the age of 13, and ruled from the twin capitals of Ajmer and Delhi, and was the last independent Hindu king to sit upon the throne of Delhi.Ajmer has been selected as one of the heritage cities for HRIDAY - Heritage City Development and Augmentation Yojana scheme of Government of India.