It is an oblong building, with a flat roof and arched doors in the style of the Diwan khas. The roof is protected by a plain parapet, and on each of its four corners, there is an open square pavilion supported by four stone pillars. With the exception of the inner walls of the rooms, which are up to the waist, covered with marbles, the building is constructed of grey sand stone. The deep stone ledge under the roof, which is common to the other buildings in the Fort, is not missed here.
On the north of Diwan Khas are the royal baths, the two buildings are united by a marble paved floor about 46 feet wide. In the centre of the southern wall of the baths, facing the Diwan khas, there is a Hall with three arched doors which is the organised entrance to the baths. On either side of this Hall there are two rooms and through the centre of the hall the visitors enters the baths, which consist of three beautiful roomy apartments, paved with white marbles. The pavement throughout these rooms the walls up to waist, the reservoirs, and the vapour slabs were originally inlaid with are and precious stones of various colours, representing flowers and branches, executed with Great taste. There are three reservoirs for water in the apartments which overlook the river and in its eastern wall there is a small marble balcony, on either side of the wall is pierced by a window covered with marble lattice work. In the second apartments there is only one such reservoir, and in the centre of the third apartments there is a vapour slab of great beauty, Behind this is the stone which used to supply the bath with hot water, fountains were placed in the centre and the light was admitted by windows of stained glass.