The Talatal Ghar [tɔlatɔl ɡʱɔɹ]) is an 18th-century palace and military base located in Rangpur, 4 kilometres (2.5 mi) from present-day Sivasagar, Assam, India.

The upper floor which is currently exposed had earlier chambers made of wood, timber and other impermanent materials, which were burnt during the Moamaria rebellion, Burmese invasions and by British.

It houses two secret tunnels, and three floors below ground level which were used as exit routes during the Ahom conflicts with other kingdoms or enemy attack (and which give the structure its name).

The royal apartments were located in the upper floors which are now to a great extent disappeared due to being made of semi-permanent materials.

[8][9] The interior and exterior of the palace were once beautifully engraved with reliefs of hunting scenes, floral designs, god and goddesses which only a few has survived.

Among the archaeological remains were brick platform, pathway, long walls, drain made of terracotta pipes and the ceramic objects found were vases, vessels, dishes, bowls etc.

[11] However, the first Ground Penetrating Survey (GPR) in the northeast, undertaken at two Ahom monuments in the Sivasagar district in early April 2015, did not reveal the existence of any secret tunnel.