Bock Casemates & Fortress Tours
Go beneath the “Gibraltar of the North”: the Bock Casemates are 17 km of tunnels carved into Luxembourg’s cliffs from 1644, part of the UNESCO-listed fortress that made the city one of Europe’s strongest strongholds. Guided old-town tours tell the fortress story from the ramparts above and the galleries below.
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Casemates & Fortress a Luxembourg City — Domande frequenti
What are the Bock Casemates?
A network of defensive tunnels hollowed into the Bock cliff from the 17th century — 17 km survive, with cannon galleries and views over the Alzette valley; entry is around €10–€15.
Why is Luxembourg called the Gibraltar of the North?
Its clifftop fortress, ringed by three defensive walls and kilometres of casemates, was considered nearly impregnable — hence the nickname.
Are the Casemates included in walking tours?
Most walking tours cover the fortress history and viewpoints outside; casemate entry is usually a separate ticket you can add after the tour.