With its mysterious underground setting, Valkenburg aan de Geul has been a major tourist attraction for a long time. The railway station was built in 1853 on a line connecting the two cities of Maastricht and Aachen (D). In those days, the well-to-do were able to discover the charming little town of Valkenburg by railway, the line having been built at a cost of one million Dutch guilders. As a result it gained the name Miljoenenlijn. From the top of the picturesque castle, it is possible to survey the ruins of this the fortified town, as if they fit into the palm of your hand, inviting you to come and see it for yourself.
There is much to see and do in and around Valkenburg: there are two theme parks, a cable car and toboggan run, underground marlstone caverns and museums, the highest castle ruins in the Netherlands, spa and wellness facilities, the Holland Casino, two underground and aboveground cycling tours, stylish restaurants, a thriving nightlife, chateaux, green parks and extensive nature reserves.