Jama Masjid in the eighteenth century, a large tank (water reservoir) was situated at this site in the midst of gardens and open land and belonged to a Konkani Muslim merchant trading in Goa and Calicut, who in about 1775, agreed to the erection of a mosque at this site on condition that the tank was preserved intact. The construction started initially in 1775 with raising of foundations on the tank. Objections were raised by neighbours that delayed construction until 1778. More disputes arose with illegal construction activities to its west and south. Finally the erstwhile governor of Bombay, Sir Meadows Taylor decided in favour of the mosque authorities. The date of its completion (AD 1802)/(AH 1217) is derivable from the chronogram Jahaz-i- Akhirat, "The ship of the world to come" which contains an allusion to the fact that it was constructed on the tank.A one-story building was therefore erected over the tank and formed the original nucleus of the present Jama Mosque. A top floor was added with the munificence of a prominent konkani merchant Mohammad Ali Roghay in 1814 The Jama Mosque is a quadrangular structure of brick and stone, encircled by a ring of terrace roofed and double storeyed buildings, the ground floors of which are let out as shops. The chief or eastern gate of the mosque leads directly across an open courtyard to the ancient tank, which is now furnished with masonry steps and embankments, built in 1893, and contain about ten feet of water fed by springs at the bottom, that contains gold and silver fish and few turtles. This is used for ritual ablutions (wudu), however modern facilities are also available for this purpose. From the depth of the tank rise sixteen black stone arches, constructed in 1874, which support the whole fabric of the mosque, the upper story being upheld by five rows of wooden pillars, each of which contains a receptacle for sacred books. The arches in the tank were built in 1874 at a cost of Rs. 75000/- while other noteworthy additions to the premises are the large windows in the north, east, and south sides constructed in 1898, and the school building Rs. 20000 in 1902. The Jama Masjid is located in Janjikar Street, Kalbadevi near 'Dhobi Talao' area, Mumbai 400003. To its west is Zaveri Bazar (the main jewellery market) and to its east lies Abdul Rehman Street. Nearest train stations are Marine Lines to west and Masjid Bunder to east. For bus journeys, use buses stopping at Mahatma Phule Market (old name Crawford Market