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Copenhagen
SeeHistoric siteØsterbro

Trekroner

Trekroner fortress

This 18th-century fort was built to guard the sea approach to Copenhagen's harbor in 1786. It has a special atmosphere, and some gorgeous views over Øresund. There are several well-preserved military buildings and fortifications. A restaurant and a café have been opened in a renovated building. The only access is via Canal Tour's green hop on hop off route (summer only).

Address
Københavns Havn
Getting there
12.61408
Hours
Summer: 10:00-15:00 daily, closed the rest of the year
Price
Admission is free, boat costs 35 kr

Listing from Wikivoyage: Copenhagen/Østerbro, CC BY-SA 4.0.

Location and details from OpenStreetMap, © OpenStreetMap contributors, ODbL.

Also listed in Overture Maps open data.

Updated 27 Sept 2026. Something wrong? Tell us.