Flakfortet

Flakfortet stands on an artificial island in the Øresund strait between Denmark and Sweden. The complex features thick concrete walls and gun emplacements that show the typical design of an early 20th century coastal defense installation.

Construction took place between 1910 and 1914 as part of Copenhagen's defense network. The fort lost its military function in 1968 when coastal defense strategies changed and it was deactivated.

The fortress now hosts classical music concerts and offers tours where visitors can learn about early 20th century military design and coastal defense tactics. You can see how soldiers once lived and worked in this isolated outpost.

The fort is only reachable by boat from Copenhagen harbors like Nyhavn, with a crossing time of around 40 minutes. Visit on dry days when the ground and walkways are safest for exploring.

The fort was built using reinforced concrete caissons sunk into the seafloor, an early example of this technology in Northern Europe. This innovation allowed builders to create a stable military structure where only water existed before.

Location: Copenhagen Municipality

Part of: Fortifications of Copenhagen

Email: info@flakfortet.com

Website: https://flakfortet.com

GPS coordinates: 55.70361,12.73139

Latest update: December 8, 2025 19:43