Luxembourg City's Old Quarters and Fortifications, a UNESCO World Heritage Site since 1994, were once among the most heavily fortified sites in Europe, earning the city the nickname "Gibraltar of the North."
Record no. MRB-2026-006605
"Gibraltar of the North" fortifications
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.