The largest fortified fortress of the 18th century in Europe.

Located on a hill, at the end of the rise of the Castle, it is a large bastioned fortress built during the 18th century following the project of the commander of the Corps of Engineers Juan Martín Zermeño. It occupies an area of 32 hectares with a perimeter of 3,120 meters, and the cisterns, located below the weapons yard, hold 9 million liters of water. Sant Ferran Castle, which had a capacity for 4,000 men, is now a first-class heritage site, the largest monument in Catalonia and the largest modern fortress in Europe.

Due to its enormous dimensions, due to the sophisticated construction techniques applied within the military engineering of the time, and due to its excellent state of conservation, a visit to Sant Ferran Castle is a unique experience.