Motijhil (also Motijheel, literal translation: Pearl Lake), also known as Company Bagh due to its association with the East India Company, is a horse-shoe shaped lake in Murshidabad, West Bengal, India. Kala Masjid, is situated in the vicinity of the lake and was constructed in 1749–50 AD. The construction date is also mentioned in a Persian inscription which is embedded in the wall of the mosque. The mosque is rectangular in plan and has is three domed. The mosque rests on several octagonal drums which are plain and are devoid of any decoration and the domes are crowned by lotus and kalasha (pot) finials. It also has four octagonal minarets at the four corners which taper upwards and are topped by bulbous kiosks which are supported on slender pillars. The minaret shafts are decorated. The facade is also ornamented. Three arched doorways on the east open to a prayer hall. A copy of the Quran, calligraphed by Nawazish Muhammad Khan himself is also kept preserved inside the mosque.The plinth area of the mosque is 5986 square feet. Opposite to this masjid on the east banks of the lake used to be an ornamented mosque known as the Raesh Bagh.
Source from : wikipedia.