Delhi, known locally as Dilli , and by the official name National Capital Territory of Delhi (NCT), is the largest metropolis by area and the second-largest metropolis by population in India

It is the capital of India and its political and cultural center. Located on the banks of the River Yamuna, Delhi has been continuously inhabited since at least the 6th century BCE

With an estimated net State Domestic Product (FY 2007) of Indian rupee. 1,182 billion (US$24.5 billion) in nominal terms and Indian rupee. 3,364 billion ($69.8 billion) in PPP terms, Delhi is the largest commercial center in northern India.