Opening hours and prices
Suomenlinna is a district of Helsinki and is open to visits every day of the year. Most tourist services on the island are open during the summer season, but there are some services available in the winter as well.
Helsinki Regional Transport Authority (HSL) runs a ferry service from Kauppatori to Suomenlinna throughout the year. JT-Line operates a waterbus in the summer (May-September). A service boat runs throughout the year from Katajanokka.
There is no entrance fee to the fortress. Visitors only have to pay for the crossing to Suomenlinna and back.