Suomenlinna Sea Fortress: A Chill Island Escape Just Off Helsinki

#cityplaybook Just a 15-minute ferry ride from Helsinki, Suomenlinna (also called Sveaborg) is a laid-back island fortress that feels like stepping into another world. This UNESCO World Heritage Site is packed with cool old tunnels, stone walls, cannons, and grassy hills perfect for a picnic or lazy stroll. You’ll find cozy cafés, museums, and even a beach if the weather’s right. It’s great for history lovers, families, or anyone looking for a peaceful day away from the city buzz. Bring your walking shoes and camera—it’s a super easy and fun getaway that’s full of charm.