Masjid-i-Jahan Numa commonly known as Jama Masjid is the largest in India, with a courtyard capable of holding twenty-five thousand worshippers and is one of the best known mosques in India. The mosque stands in one of the busiest and popular street or center in old Delhi called Chandni Chowk. It was commissioned by the Mughal Emperor Shah Jahan, who built Taj Mahal and was completed in the year 1656.The highly decorative mosque has three great gates, four towers and two 40m-high minarets constructed of strips of red sandstone and white marble. Jama Masjid of Delhi is the largest mosque in India. The Jama Masjid stands across the road in front of the Red Fort. Built between 1644 and 1658, one of the last architectural works of the Mughal emperor Shah Jahan. The first three storeys of the Jama Masjid tower are made of red sandstone and the fourth one is made of marble, while the fifth is made of sandstone. The Jama Masjid is covered with intricate carvings and has verses inscribed from the holy Qur'an. The grand Red fort (Lal Qila) stands on the eastern side of the Jama Masjid. The main prayer hall of the Jama Masjid is made up of high cusped arches and marble domes. The cabinet in the north gate of the Jama Masjid contains a collection of Muhammad's relics - the Qur'an written on deerskin, a red beard-hair of the prophet, his sandals and his footprints, implanted in a marble block.