The Karatulab Khan Mosque, located in Begumbazar of Old Dhaka, stands as a significant example of Mughal-era architecture in Bengal. Built between 1701 and 1704 by Murshid Quli Khan, who was appointed as the Diwan of Bengal by Emperor Aurangzeb in 1700, the mosque is notable for its five domes, octagonal corner towers, and a rare 'baoli' or stepwell. The structure, made of brick, sand, and lime, combines religious function with architectural artistry.

Researchers note that Murshid Quli Khan’s long service in the Deccan region before arriving in Bengal influenced the mosque’s design, particularly the inclusion of the baoli, which is uncommon in Bengal’s mosque architecture. The mosque’s balanced proportions, decorative arches, and restrained ornamentation emphasize structural beauty over lavish embellishment.

More than three centuries old, the Karatulab Khan Mosque remains a valuable monument of Dhaka’s history and Mughal heritage. Its unique architectural blend and historical significance make it an enduring symbol of the city’s cultural and artistic legacy.