Copenhagen, Denmark

Middelgrundsfortet is a sea fort located in the Øresund between Copenhagen and Malmö. It was constructed 1890–1894 as a part of Copenhagen's sea-fortifications, partly from material excavated from Frihavnen. It is one of three artificial islands that were created to defend the entrance to Copenhagen's harbor (the other two are Flakfortet and Trekroner Fort).

Middelgrundsfortet was the largest sea fortress in the world, and is still the largest man-made island without abutment, with an area, including wave breakers, of approximately 70 000 m²; the buildings total approximately 15 000 m². A HAWK battery was placed on the island. Until 1984 the fortress was a military area; in 2002 it was sold to a private investor. Ferries connect Middelgrundsfortet with Langelinie, Copenhagen.



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Copenhagen, Denmark
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Founded: 1890-1894
Category: Castles and fortifications in Denmark


4.5/5 (based on Google user reviews)

User Reviews

Jan Erik Rasmussen (4 years ago)
Only accessible by boat.
Niklas Thulin (4 years ago)
Cool conference place. Full of military history. Simple yet fresh facilities. Great for teambuilding type of activities. Good food, good service. Only youth managing and operating the whole island including servicing the guests, they do a great job. We got there by high speed rib-boats but there is a sort of ferry going there as well. Try it out, its really an adventure.
Gert Frederiksen (5 years ago)
It's a great place for a forest trip
Poul Erik Bertel (5 years ago)
Still blocked for access
Michael Cortsen (5 years ago)
How to get to the flak fort?
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