water parks emerging from spas continue to more closely resemble mountain resorts as they become four-season destinations-for example, splash universe water park resort, a member of the world water park association, is themed to match the community in which it is located. the theme is intended to enhance the communities' destination appeal. therefore, the amusement and leisure time industry is becoming more concentrated as winter sports are becoming commonplace themes in summertime water rides. a process of concentration can be observed in the hybrid segments of theme-, amusement-, and water parks. some water parks are more spa-oriented; e.g. schwaben quellen, a member of european waterparks association (ewa) has no water slides, but instead has many saunas, steam rooms, "adventure showers", and relaxation-oriented water play areas.