Suomenlinna

Suomenlinna, a UNESCO World Heritage Site off Helsinki’s coast, spreads across six islands linked by bridges and walking paths. You can see 18th-century defensive walls, enter the Suomenlinna Museum to learn about the fortress, or explore the Military Museum’s WWII submarine Vesikko. The Lutheran church here also functions as a working lighthouse, its light visible to ships in the bay. Follow the blue route past old artillery positions and the King’s Gate, a stone arch built in 1752 for a Swedish king’s arrival. Over 800 people live on the islands full-time, and places like Cafe Silo serve coffee in buildings that date back to the 1800s, with the Baltic Sea nearby.

Ferry Travel from Helsinki to Suomenlinna

Take the HSL ferry from Helsinki’s Market Square for a 15-minute trip to the islands. Ferries depart every 20–60 minutes between 6:00 AM and 2:20 AM, with no service from 3:00 AM to 6:00 AM. A round-trip ticket costs €5 and remains valid for 12 hours. When you arrive at the main pier, look for the bright pink Jetty Barracks Gallery, which changes its art displays regularly. Icebreakers keep the route operational in winter, though timetables may shift during severe storms.

Exploring the Blue Route and Major Attractions

Follow the 1.5-kilometer blue route to see Suomenlinna’s key sights. Begin at the Jetty Barracks, then walk to the church with its functioning lighthouse. Move on to the Military Museum, where anti-aircraft guns and the Vesikko submarine explain Finland’s military past. Continue to Kustaanmiekka’s granite walls for clear views of Helsinki across the water. Finish at the King’s Gate, where stone steps descend into the sea—this spot was built to welcome a Swedish monarch in the 18th century.

History: Swedish Fortress to Finnish Landmark

Sweden started building Suomenlinna in 1748 as a defense against Russia, but lost control during the 1808 Finnish War. Russia later added barracks and converted the church from Orthodox to Lutheran use. Bomb damage from 1855 and 1941 remains visible on some structures. Today, over 200 buildings are preserved, including old storage spaces now used by artists. Summer brings theater performances and art workshops for kids, emphasizing the island’s focus on culture.

Eating, Museums, and Visiting Tips

Eleven cafés and restaurants operate seasonally, with many closing from October to April. Cafe Vanille sells pre-packed lunches for picnics on the grassy slopes, and Cafe Silo makes cinnamon buns in a converted warehouse. The Suomenlinna Museum uses maps and models to explain the fortress’s past. Plan your trip between May and September for full access to museums and tours. Wear shoes with good grip—paths are rocky, and some tunnels have uneven floors.

Year-Round Residents and Infrastructure

Approximately 900 people live in Suomenlinna’s apartments, some of which were once military barracks. The hostel occupies a former schoolhouse used by Russian and Finnish troops. A tunnel built in 1982 brings electricity and water from the mainland, essential for daily life. In 2015, postal drones were tested here, blending modern technology with historic surroundings. Stick to marked trails to protect fragile areas, particularly near Kustaanmiekka’s sandy shores.

Visitor Information and Logistics

No fee is required to enter Suomenlinna, but museums and guided tours charge admission. Buy tickets online or at the visitor center near the ferry dock. Public restrooms are located near the pier and major museums. Overnight camping isn’t permitted, but the hostel offers affordable shared rooms. Check updated ferry schedules during winter weather, and plan at least three hours to walk the islands. For fewer crowds, arrive on weekday mornings before midday.