City Park

MergelRijk is the best adventure for young and old in the caves of Valkenburg: an exciting and incredibly multifaceted experience in the caverns beneath Valkenburg. This unique attraction enlightens you about all features and aspects of marlstone and underground caverns through the ages. Enjoy the great wealth of attractions, films and informative details. Children can take part in an exciting treasure hunt. And last but not least: Take the best interactive photos in the caves of Valkenburg! From June ‘22, spectacular 3D cave paintings can be seen on the walls, ceilings and floors in part of the caves of MergelRijk. These cave paintings are made by the best 3D art artists in the world. You can experience the 3D paintings at its best by taking a picture! So don't forget your phone or cam!

Stichting Kasteel van Valkenburg (Valkenburg Castle Foundation) was founded in 1924 with the objectives of preserving the Velvet Cave and the ruins of Valkenburg Castle (the Netherlands’ only hilltop castle), as they are now, for future generations and keeping both of these national monuments safe and accessible.