It was built in 1597 and its aspect changed very little over the past 400 years as the general layout invented by the Piedmontese architect Ercole Negro will be left almost intact by its followers: A fortress with an extended star shape with a narrow end, including many bastions and advanced ditches.
The fortress, built in 1597, has retained its fundamental design over the past four centuries. The layout of the fortress, conceived by Ercole Negro, will be preserved almost entirely by subsequent builders: a star-shaped structure with a narrow end, featuring numerous bastions and deep ditches.