a) scientifically recognised and experientially proven climatic qualities and a corresponding air quality, which are monitored,
b) at least one doctor's office,
c) facilities for the implementation of a climatic treatment, in particular parks and forests with marked hiking trails, games, sports and sunbathing areas, sufficiently undisturbed by traffic,
d) swimming possibilities; These must be guarded if the location at a bathing lake is designated for the air spa resort.