It is the capital of India and a union territory. It includes New Delhi which is the (capital of India). Delhi being the capital, the headquarters of all the three units of the central government  executive, parliament and judiciary are located in New Delhi and Delhi. Delhi is the second largest metropolis of India in terms of population spread over an area of ​​1483 square kilometres. The population here is about 1 crore 70 lakhs. The main languages ​​spoken here are: Hindi, Punjabi, Urdu and English. Delhi has historical importance in India. In its south-west are the Aravalli hills and in the east are the Yamuna river, on the banks of which it is situated. In ancient times, it was the main stop on the way of commerce routes passing through the Gangetic plain.

Situated on the banks of river Yamuna, this city has a glorious mythological history. It is the oldest city of India. The beginning of its history is associated with the Indus Valley Civilization. Evidence of this has been found from the excavations done in the surrounding areas of Haryana. In the Mahabharata period, its name was Indraprastha. With the rise of the Delhi Sultanate, Delhi emerged as a major political, cultural and commercial city. Many ancient and medieval buildings and their remains can be seen here. In 1639, the Mughal emperor Shah Jahan built a walled city in Delhi itself, which was the capital of the Mughal Empire from 1679 to 1857.

In the 18th and 19th centuries, the British East India Company occupied almost the whole of India. These people made Kolkata their capital. In 1911, the British government decided to bring the capital back to Delhi. For this the construction of a new city New Delhi started in the south of Old Delhi. New Delhi was declared the capital of India after gaining independence from the British in 1947.

After independence, there was migration of people from different areas in Delhi, due to which there was a radical change in the nature of Delhi. Due to the settlement of people of different provinces, religions and castes in Delhi, the urbanization of Delhi took place as well as a mixed culture also took birth here. Today Delhi is a major political, cultural and commercial center of India.

Delhi is one of the largest commercial metropolis of India after Mumbai. It is also counted among the richest cities of the country in terms of average per capita income in the country. Since 1990, Delhi has become a favorite destination for foreign investors. Recently many multinational companies like Pepsi, Gap, etc. have opened their headquarters in Delhi and its adjoining areas. The Delhi Metro Rail was started in the metropolitan areas of Delhi in the year 2002 on Christmas Day, which is expected to be completed in the year 2022.

Delhi is connected to the Indira Gandhi International Airport by air transport all over the world.