All Forts and Coastal Defenses

Forts, fortresses and coastal defensive structures this atlas records under Fortifications and Military Architecture, including the Torre dell'Elefante (a medieval defensive tower in Cagliari), Kleines Berlin (a Second World War air-raid shelter complex in Trieste) and Merkhav Mugan (the Israeli reinforced defensive room type). Belongs here: any fort, fortress, coastal battery or comparable defensive military structure this subcategory records that is not itself called a castle. Does not belong here: a castle, gathered under this subcategory's own Castles group instead, or a citadel or city wall, gathered under Citadels and City Walls.