The thermal origin of the Mondorf-les-Bains health center dates back to the discovery of the Kind spring in 1841, the health benefits of which were recognized in 1847. Since then, spa guests coming from the Grand Duchy of Luxembourg but also from neighboring countries have not stop growing and enjoying the benefits of thermal water. Since 1988, the establishment has expanded with two hotels, a spa, numerous seaside leisure activities, restaurants as well as rooms for private or professional events.