Delhi
Delhi, known locally as Dilli and also 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 eighth largest metropolis in the world by population.
Located on the banks of the River Yamuna, Delhi has been continuously inhabited since at least the 6th century BCE. After the rise of the Delhi Sultanate, Delhi emerged as a major political, cultural and commercial city along the trade routes between northwest India and the Indo-Gangetic plains. It is the site of many ancient and medieval monuments, archaeological sites and remains. In 1639, Mughal emperor Shahjahan built a new walled city in Delhi which served as the capital of the Mughal Empire from 1649 to 1857.
A new capital city, New Delhi, was built to the south of the old city during the 1920s. When India gained in 1947, New Delhi was declared its capital and seat of government. As such, New Delhi houses important offices of the federal government, including the Parliament of India, as well as numerous national museums, monuments, and art galleries.