Jaipur is the capital of Rajasthan, which is located in northwest India. It is located in the state’s east-central region, nearly halfway between Alwar (northeast) and Ajmer (southeast) (southwest). It is the most populous city in Rajasthan. The city was constructed in 1727 by Maharaja Sawai Jai Singh to replace neighbouring Amber (now Amer, a part of Jaipur) as the capital of the princely state of Jaipur. It is a walled town surrounded (save to the south) by hills (founded by the Rajputs in the 12th century CE).