At first sight, Les Thermes, the centre for swimming and leisure, looks as if a fascinating flying saucer had landed in the area of Strassen. The complex opened in 2009. The huge swimming area comprises various sports and other pools, two big long slides and other attractions. There is also a separate sauna and wellness area – warm colours and leather ribbons enwrap a relaxation room and the corridors and thus create an atmosphere of recreation and security. Both swimming and sauna area also have an outdoor area. A gym, beauty, cosmetic and two restaurants also wait for you.