Jaigarh Fort is a historic fort located in Jaipur, Rajasthan, India. It was built by Jai Singh II in 1726 to protect the Amer Fort and its palace complex. The fort stands on a hilltop and offers magnificent views of the surrounding landscape.

The fort features massive walls and bastions, making it one of the strongest forts in Rajasthan. It is also home to the world's largest cannon on wheels, the Jaivana Cannon, which was manufactured in the 18th century and weighs around 50 tonnes.

Inside the fort, visitors can explore various structures including the palace, temples, gardens, and reservoirs. The palace is decorated with beautiful frescoes and features several rooms, halls, and courtyards. The fort also has a museum that showcases a collection of arms, ammunition, and other artifacts used during the reign of the Rajputs.

One of the most fascinating features of Jaigarh Fort is the underground tunnel that connects it to Amer Fort, located just 1.5 kilometers away. The tunnel was built to provide a safe passage for the royal family during times of war or emergency.