Fortress of Sveaborg

The Fortress of Sveaborg, also known as Suomenlinna, is a historic sea fortress located on islands near Helsinki, Finland. Built in the mid-18th century by Sweden to defend against Russia, it consists of interconnected islands with fortifications, walls, and tunnels. Today, it is a UNESCO World Heritage Site, attracting visitors with its well-preserved defenses, military history, and scenic views. It also functions as a vibrant cultural area with museums, shops, and restaurants, blending its historical significance with modern recreational use.