One of the most spectaculat forts of Jaipur, Jaigarh fort or 'Victory Fort' is situated on a hilltop. One of the few hard-core fortress and military structures of medieval India that are well preserved and are almost intact, this fort has palaces, granary, well-planned cannon foundry, several temples, a tall tower and a giant mounted cannon known as Jaivan, which is believed to be the largest cannon in the world. Built between 15th and 18th centuries, jaigarh Fort is situated 15 km from Jaipur and is surrounded by forbidding and imposing stone ramparts. The breath taking views from the Dungar Darwaza, the main gate, are enough to overwhelm anybody who comes to the place. A collection of coins and puppets are of interest to many collectors. Open to public now, it has been sealed for seven years by the government to check the authenticity of the rumor that large amount of gold treasure was buried here, which however was never really found despite all the search of the government officials. The huge moated fort was built to enforce security of Jaipur and Amber. The armory and museum within the fort are worth exploring. Though, the palace does not have the pretty palaces of Amer, it is the perfect place to visit, if you want to see the full-fledged citadel of ancient India. It takes at least two hours to explore the vast stretching grounds of the fort. The world's largest cannon on wheels, Jaivan was constructed in Jaigarh's foundry in 1720 and its barrel alone weighs close to 50 tons! It is said that it has been fired only once and that its ball fell 35 km away but this has been found to be untrue and historans believe that it has been used many times. There are loopholes for guns and boiling oil, a very efficient system for rainwater harvesting and the photographs of Sawai Bhawani Singh and Major General Man Singh II, who were senior military officers in the Indian Army, other Maharajas of Jaipur, palace guards, royal processions and the Jaipur State Cavalry. At Shubhat Niwas or the Meeting Hall of Warriors, one can see a few weather-beaten sedan chairs and drums.