Fredriksten
| Fredriksten Fortress | |
|---|---|
Fredriksten festning | |
| Halden, Norway | |
Fredriksten fortress, Halden, Norway - seen from the city's harbor | |
| Site information | |
| Controlled by | Norway |
| Site history | |
| Built | 17th century |
| In use | 17th century-1905 (fort) - today (military installation) |
| Battles/wars |
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Fredriksten is a fortress in the city of Halden in Halden Municipality, Østfold county, Norway.