The Jama Masjid of Delhi was constructed in 1650–56 by the Mughal emperor Shah Jahān. It is an impressive example of Mughal architecture. Jama Masjid and its courtyard stand on an outcropping more than 30 steps higher than the street, giving the mosque a commanding view of the surrounding area. The formal name of the mosque, Masjid-i Jahān Numā, describes it as the Mosque that reflects the world. The mosque was built by a crew of some 5,000 workers. An 99 meter square open courtyard faces the eastern gateway of the mosque building which can accommodate about 25,000 devotees in prayer. The eastern gateway was originally reserved for royal use exclusively. Others used smaller gates on the north and south sides of the building. Two 40-metre tall minarets mark the northeast and southeast corners of the building. The largest interior space is the prayer hall, about 30m x 60m. Above the prayer hall’s entrances are calligraphic inscriptions in Persian. Three large marble domes rise from the prayer hall’s roof.