| Vaberget Fortress | |
|---|---|
| Karlsborg, Västergötland, Sweden | |
| Type | Fortress |
| Site information | |
| Controlled by | Sweden |
| Site history | |
| Built | 1899–1902 |
| In use | 1902–1927 |
| Materials | Concrete, stone, steel |
| Battles/wars | None |
| Garrison information | |
| Garrison | 220 men |
Vaberget Fortress (Swedish: Vabergets fästning) is a fortress located five kilometers west of Karlsborg Fortress, by lake Vättern, in Västergötland, Sweden. The southern fort at Vaberget Fortress was the first fort in the world that fully used the protection provided by the bedrock itself by having all of its functions embedded in the mountain.