Caves of Han-sur-Lesse

A cave day out with a sense of occasion: a safari bus carries visitors through the estate's wildlife park to the historic entrance, and the guided route then follows the underground river to where it leaves the cave. The Journey tour covers about 2 km and 510 steps in two hours; the Discovery tour takes about an hour and a quarter, with 367 steps. It suits families and a first cave visit, with a varied route rather than any single record-breaking feature, but the operator says it is not accessible to people with reduced mobility, and strollers are not allowed. The heritage tram that ran from the village for more than a century has been withdrawn, and tours are led in French and Dutch, so check opening days and languages before traveling.