Gwalior Fort (Hindi: ग्वालियर क़िला Gwalior Qila) is associate degree 8th-century hill fort close to Gwalior, Madhya Pradesh, central India. The fort consists of a structure and 2 main palaces, Gujari Mahal and Man Mandir, engineered by Man Singh Tomar. The fort has been controlled by variety of various rulers in its history. The Gujari Mahal palace was engineered for Queen Mrignayani. it's currently associate degree archeologic repository. The oldest record of "zero" within the world was found in an exceedingly little temple, that is found on the thanks to the highest. The inscription is around 1500 years previous.The word Gwalior comes from one in every of the Hindu words for saint, Gwalipa.The fort is constructed on associate degree outcrop of Vindhyan arenaceous rock on a solitary rocky hill known as Gopachal. This feature is long, thin, and steep. The geology of the Gwalior range rock formations is ochre coloured sandstone covered with basalt. There is a horizontal stratum, 342 feet (104 m) at its highest point (length 1.5 miles (2.4 km) and average width 1,000 yards (910 m)). The stratum forms a near-perpendicular precipice.