The 27,5cm guns of Sveaborg's easten citadell
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Forts |
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| Name | Location | Built |
| Sveaborgs Fästning | Outside Helsinki, finland | Founded 1743, latest installation 1898 |
| Bommerhus Fästning | South of Marinehamn, Åland | Founded 1850, latest installation 1906 |
| Vaxholmsfästning | Stockholm Archipelago | Founded 1536, latest installation 1912 |
| Visborgsfästning | Gotland | Founded 1860, latest installation 1896 |
| Kungsholmsfort | Karlskrona | Founded 1680, latest installation 1904 |
| Stralsundsfästning | Stralsund, Pommern | Founded 1640, latest installation 1886 |
| Älvsborg & Carlstensfästning | Eastcoast of Sweden | Founded 1540, latest installation 1912 |
| Malmöhus fästning | Öresund | Founded 1874, latest installation 1914 |