The GAD (German Astronomical Directory) is the complete directory of astronomical institutions in German speaking countries. Public and private observatories, planetarias, astronomical research institutes and amateur astronomers associations in Germany, Austria and Switzerland are listed here. There are pure link lists and complete address lists sorted by postal code.

public observatories   planetarias
 
astronomical clubs   astronomie at school
 
private observatories   astronomical research

Planetariums, Observatories and Clubs at Google Earth

Meetings and star parties you can find in Terminkalender der SuW (in german)

Where to buy a star (in german only)