The Hohenpeißenberg Meteorological Observatory is considered the oldest mountain observatory in the world. It has been recording meteorological data since 1781 and has been a global station in the worldwide climate monitoring programme (GAW) since 1993. The station is located 65 km southwest of Munich in the foothills of the Alps and is one of two research observatories of the German Weather Service (DWD). Among other things, new observation methods for the radar network are tested here and methods for improving weather forecasts and weather warnings are developed.  Photo: Ulf Köhler, DWD