About 30 km away from Khulna City is the place Bagerhat. The place was inside the inhospitable Mangrove forest of the Sundarbans near the coast of Bay of Bengal. A General, later known to be a saint named Khan Jahan Ali came here from Delhi. He was the earliest torch-bearer of Islam in the south of Indian Subcontinent. He laid the nucleus of an affluent city at Bagerhat in the mid-fifteenth century, during the reign of Sultan Nasiruddin Mahmud Shah (14421459). He adorned his city with numerous mosques, tanks, roads and other public buildings, the spectacular ruins of which are focused around the most imposing and largest multi-domed mosque in Bangladesh, known as the Shat-Gambuj Masjid
The stately fabric of the monument stands on the eastern bank of a vast sweet-water tank, clustered around by the foliage of a low-lying countryside, characteristics of a sea-coast landscape. Nearby is the shrine of this saint flanked by a vast tank , also dug by him. A couple of crocodiles can be found in this tank which are believed to be cursed by the saint and have been living for several hundred years.