We always go here during summer for some nice picnic. Best visited on very warm days as the weather feels a little bit colder here compared to Helsinki/inland. Recommend walking all the way to the other side of island from the ferry point to the outer see views. There's old battlements and parks and also some of the walls provide cover from the possible cold wind from the sea. Also close by the Kustaanmiekka is a nice place to be morning around 10 and afternoon around 17 when the big ferry ships go thorugh this very narrow passage.
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