The Bada Imambara complex comprises of a great hall, situated at the end of an impressive courtyard. The same roof covers three halls in all, the Persian Hall, the China Hall and the Indian Hall.
The Persian or the central hall of the Imambara is almost 50 metres long and 16 metres wide. The ceiling of this columnless hall is more than 15 metres high. The hall is one of the largest of its kind in the world without any external support of wood, iron, or stone beams. The roof has been put together with interlocking bricks without using a beam or a girder. Hence, it is viewed as a unique achievement of architecture.
But the monument is not well maintained by U.P tourism. There are cobwebs, paint peeling off walls, names scratched on wall by people and above all the mark of U.P. – paan stains.