| name | heritage designation | image | status | type | date completed | date end | date start | Website | date Start construction | city | administrative división | continent | Country | latitude (°) | longitude (°) | material | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Örö | 1910 - 1915 | website | Kimitoön | Southwest Finland | Europe | Finland | 59.8116666667 | 22.3233333333 | Map | ||||||||
| Hamina Fortress | registered archaeological site in Finland |  | Fortification | 1721 | Late 1721 | website | Hamina | Kymenlaakso | Europe | Finland | 60.5666656494 | 27.1833324432 | Map | ||||
| Kärnäkoski Fortress | registered archaeological site in Finland |  | Reconstructed/Conserved | Fortification | 1791 - 1793 | 1835 | 1793 | website | Savitaipale | South Karelia | Europe | Finland | 61.2666664124 | 27.7166671753 | Map | ||
| Krepost Sveaborg |  | Fortification | 05/1914 | website | Helsinki | Uusimaa | Europe | Finland | 60.1333351135 | 24.9833335876 | Map | ||||||
| Kuusisto Castle | registered archaeological site in Finland |  | Fortification | website | Kaarina | Southwest Finland | Europe | Finland | 60.4000015259 | 22.4666671753 | Map |