- lonelyplanet.com finland/helsinki/attractions/…At Suomenlinna's main quay, the pink Rantakasarmi (Jetty Barracks) building is one of the best preserved of the Russian era.
- thirdeyetraveller.com suomenlinna-fortress-guide/How much is the Suomenlinna Ferry? JT-Line Water bus (summer months only). Your own boat! Can I take a car over to Suomenlinna island?
- gezilecekyerler.com suomenlinna-kalesi/Suomenlinna Kalesi, Finlandiya ülkesinin başkenti ve en büyük şehri Helsinki’de bulunur. Başkent Helsinki‘den buraya kısa bir feribot yolculuğu ile ulaşabilirsiniz.
- suomenlinnatours.com en/activities-at-suomenlinna…Suomenlinna Experience – short film. Once even called the Gibraltar of the North, Suomenlinna is one of the largest sea fortresses in the world.
- commons.wikimedia.org wiki/Category:SuomenlinnaEnglish: Suomenlinna, a neigbourhood and group of islands in Helsinki, Finland. Suomi: Suomenlinna on kaupunginosa ja saariryhmä Helsingissä.
- historyhit.com locations/suomenlinna-fortress/Suomenlinna is accessible only by water: a ferry service therefore runs from the Market Square to Suomenlinna throughout the year.
- myhelsinki.fi en/see-and-do/sights/suomenlinna-…Suomenlinna sea fortress is a Unesco World Heritage Site located on the coast of Helsinki, and also a suburb of Helsinki with around 800 residents.
- ftrc.blog suomenlinna/Explore the fascinating fortress of Suomenlinna in Helsinki. Discover its rich history and stunning architecture while strolling through its picturesque landscapes.
- kids.kiddle.co SuomenlinnaAn aerial view of Suomenlinna. Location. Helsinki, Finland. UNESCO World Heritage Site. Official name: Fortress of Suomenlinna. Type.
- maailmanperinto.fi en/suomenlinna/The construction of Suomenlinna began in 1748, under Swedish rule. The purpose of the fortress was to act as a naval base to defend the mainland.