MergelRijk

See one of the Netherlands' best-kept secrets with a visit to MergelRijk and explore a fascinating underground world. There's a stunning cave network hidden beneath the hills of Valkenburg that plays host to a unique exhibition. * See sand and marlstone sculptures, including a replica of Rembrandt's The Night Watch, and learn how to make your own hand-carved creation. Traverse through a thrilling dinosaur exhibit, learn about mineral mining, see intricate miniature sculptures and lots more.