<P> First Language: Hindi / Urdu / English Second Language: English Third language: Urdu / Punjabi / Bengali / Sindhi / Tamil / Telugu / Malayalam / Kannada / Gujarati / Marathi / Arabic / Persian / Sanskrit </P> <P> Around 49% of the population of Delhi lives in slums and unauthorized colonies without any civic amenities . Majority of the slums have inadequate provisions to the basic facilities and according to a DUSIB report, almost 22% of the people do open defecation . </P> <P> Delhi's culture has been influenced by its lengthy history and historic association as the capital of India, Although a strong Punjabi Influence can be seen in language, Dress and Cuisine brought by the large number of refugees who came following the partition in 1947 the recent migration from other parts of India has made it a melting pot . This is exemplified by many significant monuments in the city . Delhi is also identified as the location of Indraprastha, the ancient capital of the Pandavas . The Archaeological Survey of India recognises 1,200 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 built in 1656 and the Red Fort . Three World Heritage Sites--the Red Fort, Qutab Minar and Humayun'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, Gurudwara Bangla Sahib, 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 . </P> <P> 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 emphasised in Bahá'í texts . The Bahá'í laws emphasise 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 the holy scriptures of the Bahá'í Faith and other religions can be read or chanted inside in any language; while readings and prayers can be set to music by choirs, no musical instruments can be played inside . Furthermore, no sermons can be delivered, and there can be no ritualistic ceremonies practised . </P>

Who address delhi as one of the greatest cities in the world