Kastellet
A star-shaped 17th-century citadel, still in military use, where you can stroll along the ramparts among red barracks and a windmill.
Independent, unofficial guide, not affiliated with the places featured.
Opening hours to be checkedFreeVisit: 40 minWith children
AI image, an evocation
The grassy ramparts form a peaceful loop overlooking the moats and the harbour. The site is still an active military compound: you can walk around freely, in peace and quiet.
Our tipWalk around the top of the ramparts, then come down on the Langelinie side towards The Little Mermaid.
Access hours not confirmed by an official source: check on site.
Visiting Kastellet: the essentials
How long should you allow?
Allow about 40 min on site.
How much does it cost?
Free access.
How do you get there?
S-tog Østerport, 5 min walk. Address: Gl. Hovedvagt, Kastellet 1, 2100 København Ø.
Is the Copenhagen Card accepted?
It is not needed for free access.
Can you go when it rains?
The visit is mostly outdoors, so bring something to keep you dry.
In our routes
Nearby
- The Little Mermaid370 m as the crow flies
- Designmuseum Danmark490 m as the crow flies
- Amalienborg and the changing of the guard740 m as the crow flies
- SMK — National Gallery of Denmark1.0 km as the crow flies
Sources consulted on 2 November 2026