A large palace built by Rai Bal Mukund Das, the diwan of Narnaul during Emperor Shah Jahan’s reign. This five-storey building has a number of halls, rooms and pavillions, and the Diwan-e-Khas (inner chambers) flaunts marble floors and pillars. Fountains and springs (they don’t work anymore) were made to keep the building as well as the surrounding area cool in summer, the water being sucked in from a well in the southwest. The Persian wheel was used to lift water into reservoirs at various levels from this well so that water could flow down at great speed. The underground chambers (now eaten away) are believed to have had three layers wher light streamed in throughout the day and had tunnels which lead directly to Delhi, Jaipur and Mahendrgarh. Only a basement remains today.