The Lantern Tower is one of the three medieval historic towers in La Rochelle, Poitou-Charentes, France, which guarded the port at Aunis. The Lantern tower served as a Lighthouse and a prison throughout its history. It was also known by other names: Garrot tower, Priest tower, and Four Sergeant tower.
Location: La Rochelle, France
Nearest city: La Rochelle
Height: 180 feet (55 m)
Owner: Government
Founded: 1209
Original use: Protection of the entrance to the primitive port of La Rochelle