The Bock Casemates are part of Luxembourg City's Old Fortifications and an excellent example of military architecture spanning several centuries. The Old Fortifications are the only UNESCO World Heritage site in the country and quite stunning when taken in context of the surrounding valley and its history.
a natural fortification utilized to fend off invaders for centuries. One of the secrets of this fortification are the Casemates du Bock – a vast underground systems of passages and galleries, dating back to the 17th century. Today visitors can tour this underground labyrinth, which once held facilities for equipment, horses, workshops, kitchens, bakeries and slaughterhouses, in addition to barracks that could house up to 1,200 soldiers during wartime.