Nicknamed the “Gibraltar of the North”, the old town and its Bock casemates — 17 km of galleries cut into the rock — are UNESCO-listed.
Since 2020, Luxembourg has been the first country in the world where all public transport is free.
Free trams, trains and buses: use them to fan out to Vianden or Little Switzerland. An eSIM helps: real-time timetables on the Mobilitéit app and Müllerthal trail reviews.