The Bock Casemates are a must-see for visitors in Luxembourg and a part of Luxembourg’s histoy. They have been built by the Austrians in the eighteenth century as part of a 23 km long underground tunnel network in order to enhance the defence system of the ancient fortress. The subterranean defensive passages were placed on different levels and reached down as far as 40 metres.

It is these impressive defence works that conferred Luxembourg the name of “Gibraltar of the North”. After the dismantling of the fortress in 1867, 17 kilometres of the casemates were spared, left in good condition. The fortress ramparts and the historically impressive Old Town enjoy international reputation: in 1994 UNESCO listed them as World Heritage.   

• Entrance and tickets: Montée de Clausen, Luxembourg
• Open from 10.2. to 4.11.2018
• Guided tours from 30.3. to 16.9.2018 : every day at 11 a.m. (English/ German), at 2 p.m. (English/ French), and at 4 p.m. (English/ German)
• Personal guided tours on request:
  Luxembourg City Tourist Office, tel.: (+352) 4796 2709, [email protected]

More information on opening hours and entrance fees on