Flakfortet, meaning sand-shoal fortress, is a sea fort located on the artificially built island of Saltholmreb. Flakfortet was the last of three artificial islands that the Danes created to defend the entrance to Copenhagen's harbor (the other two are Trekroner Fort and Middelgrundsfortet). Eventually Flakfortet became more of a site for anti-aircraft weapons than for coastal artillery. Its military functions ended in 1968.

The fort was built in the years 1910–1914 as part of Copenhagen's sea-fortifications. The island is 23 meters high and covers 32,000 m2. Construction of the artificial island required the use of caissons of reinforced concrete, possibly the first use of such structures. The caissons were first cast at Lynetten quai on Refshale Island, thought the last was cast at Flakfortet itself.

Flakfortet is now used for recreational purposes such as concerts, and the site has a restaurant and yacht moorings. During the summer, a ferry company, Spar Shipping, has five scheduled trips per day to the island, with the trip from Nyhavn taking about 40 minutes each way. There is an overnight hostel on the island too.

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Copenhagen, Denmark
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Founded: 1910–1914
Category: Castles and fortifications in Denmark

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4.4/5 (based on Google user reviews)

User Reviews

Vytautas Ašeris (3 years ago)
Was never put into action, but bice place to visit nevertheless. Small, and not too long of an attraction, unless you have an event there, which is recommended.
Jon Vinther (3 years ago)
Nice place with a fine cafe
Rasmus JN (3 years ago)
So happy the government has not closed this place down.. nice for a day trip while in town ...
Jessica Klein (3 years ago)
Cool place, 1-2 hour sail from Copenhagen. They have a small shop for the most necessary things, where one can order bread for the next mornings breakfast. There is also a restaurant and rooms you can book.
Sammi Liljekvist (3 years ago)
Very cool and interesting place. The restaurant didn't have tonic water so that was kind of a bummer when it's 25 degrees and you are craving a gin tonic...
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