Gwalior Fort is located in Madhya Pradesh. Its width ranges from nearly 1 km, to less than 200 m. The walls, which encircle the fort, are solid and nearly 10 m high. Situated on a sandstone precipice, which is 2.8 km long and 200-850 m wide and 91 m above the surrounding plain, the fort has been a witness to many historical battles and events - one of the most important among them being the1857 revolt, as well as the valiant death of Rani of Jhansi. (by-7wonderofindia)