Jama Masjid (the mosque of Friday) of Delhi, the capital city of India is the country's largest mosque. It stands across the road from Red Fort and is considered to be the final architectural extravagance of the Mughal Emperor Shah Jahan. It has a courtyard capable of holding 25,000 devotees at a time. The mosque measures 65m by 35m, and its court forms a square of 100m. It was built in 1656. It is also known as 'Masjid-i-Jahanuma' or ‘Mosque commanding view of the world’. It was designed as Emperor Shahjahan's principal mosque. This monument was built by five thousand artisans. This magnificent structure stands on the Bho Jhala, one of the two hills of the old Mughal capital city of Shahjahanabad. On the east, this monument faces the Lal Quila (Red Fort) and has three gateways, four towers and two minarets. It is constructed of alternating vertical strips of red sandstone and white marble. In the three domes white marble has been used and they have been inlaid with stripes of black. The structure was placed on a high platform. Broad flights of steps lead up to the imposing gateways in the north and the south. Wide staircases and arched gateways are the hallmark of this popular mosque. The main eastern entrance, probably used by the emperors, remains closed on weekdays. The main prayer hall on the west side is adorned by a series of high cusped arches, standing on 260 pillars which support about 15 marble domes at various elevations. The premises of the south minaret are 1076-sq-ft wide.