The Vettor Pisani Battery was built between 1909 and 1912. It was named after the Supreme Venetian Commander who defeated the Genoese fleet, in the War of Chioggia, towards the end of the 14th century. The main armament consisted of six 280/L howitzers which ranged over 10.500 mt.; the artillery was arranged on the surface of semicircular emplacements and when barrels were oriented toward the sea, the shots grazed the glacis of the building and therefore the flames "shaved" the glacis itself. The battery, built in reinforced concrete, is made up of a central body of more than 80 metres long on a single level. Two parallel tunnel vaulted corridors lead to the 11-metre high telemetry turrets and to the two 30-metre long side wings. The telemetry turrets were provided with goniometers which were used to estimate the distances of the selected targets through the so-called triangulation system and with panoramic sight rangefinders. Due to the sandy nature of the soil, there were no natural observation points, therefore telemetry towers were widely used in the coastal batteries during the World War I in order to give the proper direction to the shots, as on a flat surface - both towards the mainland and the sea - it was very difficult to triangulate the shots. During the Great War, the battery stood only a short distance from the sea and the part facing it was concealed by a terreplain of sand.
World War I Museum