It is said that every stone in Delhi has a story to tell. This metropolis, officially, the National capital Territory of Delhi is one of the largest cities in India. New Delhi is a union territory which is given the status of National Capital Region. Located on the banks of River Yamuna, Delhi is believed to be inhabited since 6th century BC. Also believed to have been the site of Indraprastha, this legendary city has re-emerged into the present Delhi where plenty of tales is on the run. Located in Northern India, Delhi borders Uttar Pradesh on the east and Haryana to the West, North and South. Possessing a semi-arid climate, it has high variations between summer and winter temperature with both reaching extremes. During its long history of 5000 years, Delhi was ruled by numerous dynasties including eminent Raj put rulers like Prithvi Raj Chauhan, Turks, Tughluqs, Afghans, and Persians including Mughals and British who made Delhi their capital. However, despite all foreign invasions and being destroyed and rebuilt more seven times in its history, Delhi keeps its head high with all grace and elegance.

http://www.transindiatravels.com/delhi/tourist-places-to-visit-in-delhi
This multi dimensional city, with its ancient monuments, forts, palaces, gardens and streets takes us to the glorious past which is much celebrated in the annals of history. A vibrant melting pot, the word ‘Delhi’ perfectly coins two different worlds ‘‘old and ‘new’. While the ‘new’ represents the modern Delhi which was designed and built by the British, the ‘old’ served as the capital of Mughal India. Delhi was the epicenter of all political activities where the destiny of the nation is written. It is also the financial centre where the economic scenario of the country is decided. Despite being the commercial capital of India, its infrastructure, education and Cosmo culture which imbibes everything that come into it has put the city into the global map.
Facts & Figures

https://en.wikipedia.org/wiki/New_Delhi
Capital | New Delhi |
Area | 1483 sq km |
Latitude | 23.38 degree North |
Longitude | 77.12 degree South |
Population | 13,782,000 |
Climate | Monsoon influenced human subtropical |
Spoken Languages | Hindi, Punjabi, Urdu and English |
Clothing Required | Loose fitting cotton clothes, woolen clothes |
Best Time to Visit | October – February |
Major Festivals | Diwali, Dussehra, Lohri, Baisakhi, Holi, Mango festival, Maha Shivarathri, Christmas, New Year, Eid, Guru Nanak Jayanti, Janmashtami, Raksha Bandhan |
Tourist Destinations | Qutub Minar, Jantar Mandar, Raj Ghat, Red Fort, Humayun’s Tomb, Gandhi Smriti, Rashtrapati Bhavan, Lotus Temple, Akshardham Temple, India Gate |