Bastione Stampace, Medieval bastion in Pisa, Italy.

Bastione Stampace is a fortified bastion positioned at the southwestern corner of Pisa's defensive walls, built with solid stone and equipped with military fortification features. The structure shows typical elements of Renaissance defensive architecture with reinforced ramparts and bastions designed for cannon placement.

A tower at the Stampace corner is documented in the Breve Pisano Populi et Compagnorum of 1287. After Florence took Pisa in 1406, a rectangular fortification was built around the tower, recorded as a prison in 1426. When Florence retook the city in 1509, the tower was destroyed and two breaches were opened, one in the fortification and one in the southern walls, still visible today.

The bastion now houses the gym of the Sant'Antonio team, one of the squads that competes in Pisa's Gioco del Ponte. The building is largely abandoned, but a redevelopment agreement between the Fondazione Cassa di Risparmio di Pisa and the Comune may change that.

The bastion is accessible from several approaches along the city walls, with the best views from the southwestern side. Visitors should wear sturdy shoes as the ground can be uneven and parts of the fortification sit below street level.

The two breaches opened in the fortification and in the southern walls during the Florentine siege that ended Pisan independence in 1509 are still visible today. The 13th-century tower that once stood here was destroyed in the same fighting.