The islands of Vallisaari and Kuninkaansaari, which are located next to the Suomenlinna Sea Fortress host a unique nature due to the island´s former restricted military use. Owls and bats nest on the islands and there is a substantial number of butterflies as well as a rich vegetation and all this only a few minutes from the city center. The islands were fortified especially during the 19th century. During a 90-minute walking tour you will learn about life on the island and its military history. After the visit the group will enjoy a nice meal and drinks during a cruise in the beautiful archipelago.