Delhi's culture has been influenced by its lengthy history and historic association as the capital of India. This is exemplified by many significant monuments in the city. The Archaeological Survey of India recognizes 1200 heritage buildings and 175 monuments as national heritage sites. In the Old City, the Mughals and the Turkic rulers constructed several architecturally significant buildings, such as the Jama Masjid – India's largest mosque and the Red Fort. Three World Heritage Sites – the Red Fort, Qutab Minar andHumayun's Tomb – are located in Delhi. Other monuments include the India Gate, the Jantar Mantar – an 18th-century astronomical observatory – and the Purana Qila – a 16th century fortress. The Laxminarayan temple, Akshardham temple, the Bahá'í Lotus temple and the ISKCON temple are examples of modern architecture. Raj Ghat and associated memorials houses memorials of Mahatma Gandhi and other notable personalities. New Delhi houses several government buildings and official residences reminiscent of British colonial architecture, including the Rashtrapati Bhavan, the Secretariat, Rajpath, the Parliament of India and Vijay Chowk. Safdarjung's Tomb is an example of the Mughal gardens style. Some regal havelis (palatial residences) are in the Old City.
Lotus Temple, is a Bahá'í House of Worship completed in 1986. Notable for its flowerlike shape, it serves as the Mother Temple of the Indian subcontinent and has become a prominent attraction in the city. The Lotus Temple has won numerous architectural awards and been featured in hundreds of newspaper and magazine articles. Like all other Bahá'í Houses of Worship, is open to all regardless of religion, or any other distinction, as emphasized in Bahá'í texts. The Bahá'í laws emphasize that the spirit of the House of Worship be that it is a gathering place where people of all religions may worship God without denominational restrictions. The Bahá'í laws also stipulate that only
