One among many hill forts of India, the Gwalior Fort stands on a vast rocky hill named Gopachal. Originally built-in sandstone and lime mortar, the fort is one of the prominent structures in Gwalior. The fort has had a long history - sieged and captured by many rulers in the past. At one point in time, the Gwalior fort was regarded as north and central India's most invincible fortress. The fort houses two palaces, ‘Gujari Mahal’ and ‘Man Mandir’, which were built by Raja Man Singh Tomar during the 15th Century.