The biggest fort in India is the Chittorgarh Fort, also known as Chittor Fort, located in the city of Chittorgarh in Rajasthan, India. It is the largest fort in India and one of the largest forts in the world, covering an area of 700 acres.
The Chittorgarh Fort was built in the 7th century AD by the Maurya dynasty and has since been ruled by various Rajput clans. The fort complex includes several palaces, temples, and towers, including the famous Vijay Stambh (Victory Tower) and Kirti Stambh (Tower of Fame).