Service vehicles and cycling
Suomenlinna is a car-free zone where only service vehicles are allowed. If you are, say, organising an event or need to transport goods, you can bring your vehicle to Suomenlinna on an HSL ferry or on the service boat which leaves from the Katajanokka wharf. More information on the website of Suomenlinnan Liikenne Oy.
The speed limit in Suomenlinna is 20 km/h (12 mph) and parking is allowed only in designated areas. The Suomenlinna service tunnel is reserved for emergency vehicles only.
Transporting a bicycle on a ferry is subject to a charge. Cycling is allowed on the streets only. All earthworks in Suomenlinna are protected fortification structures. They are extremely susceptible to erosion. Cycling on the earthworks is prohibited.