Located in Aachen, the Karolus Thermal Baths is a large spa center with several thermal pools, saunas, massages and beauty treatments. Its building has three restaurants and is suitable for adults and children over the age of six, within walking distance of other cities such as Cologne and Maastricht and Brussels, whether you are driving or using public transport. The ancient Romans enjoyed the hot mineral waters of Aachen, and Charlemagne had his palace built in this area in order to take advantage of the thermal springs, so the current Carolus Thermal Baths aim to convey these traditions to visitors with their modern facilities.