Hemsö Fortress
Hemsö fästning
A Cold War sea-defence fortress blasted into a mountain, now a museum where you can explore underground tunnels.
Hemsö Fortress is located on Hemsö Island outside Härnösand. During the Cold War, Sweden carved this coastal artillery fortress into the inside of a mountain, and it was highly classified until it was decommissioned and opened to the public. The underground tunnels preserve the command centre, radar screens, living quarters and giant guns. Guided tours run in summer. It's cold inside, so bring a jacket. The fortress is about 45 minutes away by car from Härnösand, including a ferry crossing.
Opening hours
Mainly guided tours in summer
Nearby sights
- High Coast Trail (Höga Kustenleden)
- High Coast Bridge
- Mannaminne
- Rotsidan
- Barsta
- Bönhamn
- Högbonden
- Skuleberget