Koshak Mahal is an impressive palace standing at a distance of 4 km from Chanderi. The palace was built by the Sultan of Malwa, Mehmood Shah Khilji, in 1445. It was constructed as a monument to mark the victory of Mehmood Shah in the battle at Kalpi over Sultan Mehmood Sharki. The Koshak Mahal is a square structure with large impressive arched doorways.
The palace consists of four mansions of similar size and equally spaced from one another. A network of passages and overhead covered corridors connect them. The superstructure of the palace does not exist today, but the beauty of the palace can still be felt in the remaining portion standing there. Koshak Mahal was constructed from white local sandstone.
All the four mansions of the palace feature identical style of architecture and design. The palace today stands with three complete storeys and an incomplete fourth storey.