Mirador de Los Cañones Monument · San Roque, Campo de Gibraltar, Cádiz Viewpoint known as "Poeta Domingo de Mena", in the Los Cañones area, displaying two cannons used by the Spanish army during the Great Siege of Gibraltar (1779-1783). cañones del Gran Asedio de Gibraltar, 1779-1783 Photo: Ambil (Public domain) What to see and do in San Roque