Easily the most popular attraction of the city, the casemates are fortifications underground and in the city’s hillside dating back to the 1600’s. The series of formerly defensive passageways wind down spiraling staircases and through narrow hallways with hillside openings, which previously housed cannons but now provide interesting perspectives of the city below. As a result of the city’s strategic location, Luxembourg was once one of the world’s greatest fortified cities, with its fortifications continually being developed by the Holy Roman Emperors, the House of Burgundy, the Habsburgs, the French and Spanish kings, and finally the Prussians. The city’s vast network of fortifications were given designation as a UNESCO World Heritage Site in 1994.
Petruss Casemates Access : Place de la Constitution, Luxembourg
Bock Casemates Access : Montée de Clausen, Luxembourg