The Geul is a river that has its source in Belgium, about 300 meters above sea level near the German border. It flows about 20 kilometers in Belgium before enterig the Netherlands. After a further 38 kilometers through the most southern part of the province of Limburg the Geul flows into the Meuse, north of the city of Maastricht. A drop of more than 240 meters makes it to the fastest-flowing river of the Netherlands. Along the way the river gets water from no less than one hundred and thirty side streams.

The valley of the Geul in the Netherlands is a breathtaking piece of (more or less) unspoilt nature. Areas with meadows are interspersed with wooded slopes of the ‘mountains’ of southern Limburg. The valley with the meandering Geul offers cultural highlights and architectural, like quaint villages with half-timbered (farm)houses, watermills, churches and castles.