Finland
- Turku Castle (sv: Åbo Slott)
- Häme Castle (sv: Tavastehus), Hämeenlinna
- Castle of Viborg, Viipuri (Now in Russia)
- St. Olaf's Castle (fi: Olavinlinna), Savonlinna
- Suomenlinna (sv: Sveaborg), Helsinki
- fortress city of Hamina,
- Svartholma fortress, Loviisa
- fortresses of Ruotsinsalmi (sv: Svensksund), Kyminlinna and Fort Slava, Kotka
- Bomarsund fortress, Sund, Åland
- Korela Fortress (fi: Käkisalmi, sv: Kexholm), Priozersk (Now in Russia)
- Lappeenranta (sv. Villmanstrand) Fortress
- Kärnäkoski fortress, Savitaipale
Read more about this topic: Forts In Colorado