Sea Fortress

A sea fortress is a military structure built along coastlines or on islands to defend against naval attacks. It typically features thick walls, watchtowers, and cannons or artillery to monitor and control maritime access, protecting strategic areas or harbors. Designed to withstand enemy ships and prevent invasions, sea fortresses often serve as defensive outposts, controlling important waterways and ensuring security for nearby land and maritime routes. Historically, they played key roles in protecting kingdoms, trade routes, and coastlines from invasions and pirate attacks.