The population of Delhi is a heterogeneous mix of people originally belonging to different parts of North India and beyond.
Among the prominent North Indian communities are the Punjabis.
Delhi also has a prominent South Indian Community, primarily in areas like RK Puram, Mayur Vihar and Munirka.
A Bengali Settlement, the Chittaranjan Park in south Delhi is the Mini Calcutta of Delhi.
Delhi is said to be one of the oldest existing cities in the world, along with Jerusalem and Varanasi. Over the millennia, Delhi is said to have been built and destroyed 11 times.
The oldest alleged incarnation of the city shows up in the Indian mythological epic Mahabharata as Indraprastha.
The only geographical features of any significance are the river Yamuna, which flows down the eastern side of the city, and the Aravalli Hills which form a wide but low arc across the west.On the west bank is the crowded and congested Old (Central) Delhi and, to the southwest, the broad, tree-lined avenues of New Delhi, built by the British to rule their empire.Delhi (Hindi: दिल्ली, Urdu: دلّی, Punjabi: ਦਿੱਲੀ)  is India's capital city and the home of executive, legislative, and judiciary branches of the Government of India.Delhi is a large metropolis with strengths in arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism and transport all contributing to its prominence.Quality education also draws students from different states, making up one of the most diverse student populations in the country.
Like the rest of the Gangetic Plains, Delhi is as flat as a pancake.