Located close to the tomb of Khan Jahan, this is another small monument built in the local Khan Jahani style. The style refers to a group of homogenous monuments erected by Ulugh Khan Jahan in Bagerhat in the mid-15th century. It is an uncommon blend of the indigenous and the imperial style of Delhi and common features include Bengali curved battlements and cornices sloping towards the corner and thick tapered walls characteristic of the Tughlaq style.

This north-south oriented curvilinear structure with 4' think walls was originally covered by two curved and sloping roofs in the form of a do-chala rural hut. The building has undergone structural and functional changes; having recently been converted to a mosque, and outfitted with a concrete roof that is superimposed over the original curved bangla roof. The exterior has been left to deteriorate. And the original doorway on the south wall has been converted into a window, while newly added doorways inserted in the eastern and northern façades.

Terra cotta ornamentation of floral patterns and pomegranate branches decorate the interior. The surface of the curved vaulted roof gives the impression of the bamboo rafters of a rural hut. A series of six panels depicting animal figures and the form of a traditional do-chala temple being reflected in the architecture, hints at the building's original function as an early 16th century temple, rather than the 18th century mosque. 

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Source:

Ahmed, Nazimuddin. 1989. The Buildings of Khan Jahan in and Around Bagerhat. Dacca: University Press Limited, 46.