Towering amid the mists and wooded hills above Vianden is a vast slate-roofed castle complex whose impregnable white-stone walls glow golden in the evening’s floodlights, creating one of Luxembourg’s most photogenic scenes. Vianden’s appealing Old Town is essentially one road, cobbled Grand-Rue, which rises 700m to the castle gates from a bridge across the Our river. Newer sections of town follow the riverbanks in either direction.

On weekend afternoons in summer, Vianden can get overloaded with tourists and traffic. But get up early and you’ll have the whole town largely to yourself.