such as the Jama Masjid—India's largest mosque built in 1656 and the Red Fort. Three World Heritage Sites—the Red Fort, Qutub 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 Baháʼí Faith's 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 Baháʼí 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 National Museum and National Gallery of Modern Art are some of the largest museums in the country. Other museums in Delhi include the National Museum of Natural History, National Rail Museum and National Philatelic Museum. Chandni Chowk, a 17th-century market, is one of the most popular shopping areas in Delhi for jewellery and Zari saris. Delhi's arts and crafts include, Zardozi—an embroidery done with gold thread—and Meenakari—the art of enamelling. Festivals Delhi's association and geographic proximity to the capital, New Delhi, has amplified the importance of national events and holidays like Republic Day, Independence Day (15 August) and Gandhi Jayanti. On Independence Day, the Prime Minister addresses the nation from the Red Fort. The Republic Day Parade is a large cultural and military parade showcasing India's cultural diversity and military strength. Over the centuries, Delhi has become known for its composite culture, and a festival that symbolises this is the Phool Walon Ki Sair, which takes place in September. Flowers and pankhe—fans embroidered with flowers—are offered to the shrine of the 13th-century Sufi saint Khwaja Bakhtiyar Kaki and the Yogmaya Temple, both situated in Mehrauli. Religious festivals include Diwali (the festival of lights), Mahavir Jayanti, Guru Nanak's Birthday, Raksha Bandhan, Durga Puja, Holi, Lohri, Chauth, Krishna Janmastami, Maha Shivratri, Eid ul-Fitr, Moharram and Buddha Jayanti. The Qutub Festival is a cultural event during which performances of musicians and dancers from all over India are showcased