Built in 1724, its importance lies not only as a great centre of Islamic learning but also for the tomb of Murshid Quli Khan, who is buried under the entrance staircase. The most striking feature is the two large corner towers having loopholes for musketry. At present it is maintained and protected by the Archaeological Survey of India and the Government of West Bengal. It is a brick built mosque and is surrounded by double storied domed cells, which were built for those who read the Holy Quran in those days, they can also be called a Madrasa. All the rooms can in all accommodate 700 Quran readers. These rooms from a cloister to the huge courtyard in front of these rooms. At real beauty.