The Mosque City of Bagerhat (; historically known as Khalifatabad) is a UNESCO World Heritage Site in Bagerhat District, Bangladesh. It contains several mosques built during the Bengal Sultanate in the 15th-century, of which the Sixty Dome Mosque is the largest. Other mosques include the Singar Mosque, the Nine Dome Mosque, the Tomb of Khan Jahan, the Bibi Begni Mosque and the Ronvijoypur Mosque. The mosques were built during the governorship of Ulugh Khan Jahan, a Turkic military officer appointed as governor in the Sundarbans by Sultan Mahmud Shah of Bengal.