Considering the Hilton Luxembourg in Luxembourg?
A VT member wrote the following comment about visiting Luxembourg:
Explore the casemates. ... by DrewV
Explore the casemates. Luxembourg was once called the Gibraltar of the North, and by exploring these fortifications beneath the city, you begin to see why. Most of the immense citadel was destroyed as a prerequisite for Luxembourgois independence in 1815. But what's remaining is still certainly formidable and fun to explore, as Marguerite and Brigitta demonstrate.