Camping Olympia

Les Grottes de Remouchamps (five minutes’ drive) are a complex of subterranean caves, including the monumental Cathedral Hall, which is so vast it could hold a 12-storey building. Your visit of the caves is in two parts: a walk of just over a kilometre through a series of atmospherically illuminated caverns, and a boat trip along an underground river. A lively university city, Liège (35 minutes) has a pretty Old Town with historic buildings such as St Paul’s Cathedral, an imposing Gothic structure with delicately decorated vaults. Another impressive ceiling can be admired at the Opéra Royal de Wallonie-Liège, or head to La Cité Miroir for art exhibitions in a former pool complex. Cross the border into the Netherlands and visit Maastricht (one hour), where you can then cross the river Meuse via Sint Servaasbrug, a distinctive centuries-old stone bridge. The Basilica of Our Lady has a forbidding stone facade with two turrets and is surrounded by leafy streets lined with cafes and restaurants.