The Tour Vauban (Vauban Tower), initially known as the tour de Camaret, is an 18m-high polygonal defensive tower built to a plan by Vauban on the Sillon at Camaret-sur-Mer, as part of the fortifications of the goulet de Brest. It has three levels and is flanked by walls, a guardhouse and a gun battery which can hold 11 cannons as well as a cannonball foundry added in the French Revolution period. The Anglo-Dutch fleet anchored between Camaret Bay and Bertheaume. Consequently, Tour Vauban also received some support from Fort de Bertheaume on the opposite side of the Goulet de Brest.