Delhi is famous for its Mughal, Afghan, Hindu and British architecture. The city has a large and lucrative tourism industry serving millions of international and domestic tourists. Besides being the seat of the Government of India, Delhi has been the capital of several great empires of ancient India. The city is marked with several ancient and modern monuments.

Two of the World Heritage Sites: the 72.5 metres tall Qutab Minar and Tomb of the Humayun are located within the Delhi metropolitan area. Other famous landmarks in Delhi include the Delhi Fort, India Gate, Lotus Temple, Old Fort (Purana Qila), Raj Ghat and Laxminarayan Temple. New Delhi, a spacious, well-designed district of Delhi houses several Government buildings and official residences.

Some of the important structures situated within the premises of New Delhi include the Rashtrapati Bhavan, the Secretariat, the Rajpath, the Parliament of India, the Jantar Mantar and the Vijay Chowk. Apart from these historic and significant landmarks, other tourist attractions include the Appu Ghar, Delhi's disneyland; the Pragati Maidan, one of the largest exhibition grounds in Asia; the Mughal Gardens and Delhi Zoological Park.

Famous Sites in Delhi