Bock Casemates
Casemates du Bock
A network of 17 km of tunnels carved into the Bock promontory, the core of Luxembourg's fortress known as the “Gibraltar of the North.”
Carved into the sandstone cliffs from 1644 onward by a succession of rulers, including the Spanish, French, and Austrians, the tunnels reached a length of 23 km at their peak and could hold thousands of soldiers and horses. About 1 km is open today. You can walk through gun embrasures, staircases, and underground passages, and look down through the gun slits over the Grund and the Alzette valley. On top of the Bock rock stand the remains of the castle that marks the founding of Luxembourg City in 963. The site is open roughly 10:00 to 17:30. Admission is about €8. Queues are long in peak season, and the interior is cold and damp, so bring a jacket.
Opening hours
Approx. March–November 10:00–17:30
Nearby sights
- Wenceslas Wall Circular Walk
- Clausen
- Neimënster Abbey
- Chemin de la Corniche
- Grund
- National Museum of Archaeology, History and Art
- Luxembourg City History Museum
- Grand Ducal Palace