The Taj-ul-Masjid is one of the largest mosques in Asia, built by Nawab Shahjehan Begum around a courtyard with a large tank in the centre and with an imposing double storey gate-way with 4 recessed archways and 9 imposing cusped multi foiled openings in the main prayer hall. The Quibla wall in the prayer hall is carved with 11 recessed arches, while the mimber is made of black basalt.

The structure is enlivened by the limpid expanse of water in the tank outside the northern wall. The monumentality of this structure was much greater originally when it faced the towering bastions of the Fatehgarh Fort. A three-day Ijtima congregation held here annually draws people from all over the country.