Berlin Observatory
The Berlin Observatory (Berliner Sternwarte) is a German astronomical institution with a series of observatories and related organizations in and around the city of Berlin in Germany, starting from the 18th century. It has its origins in 1700 when Gottfried Leibniz initiated the "Brandenburg Society of Science″ ("Sozietät der Wissenschaften") which would later (1744) become the Prussian Academy of Sciences ("Preußische Akademie der Wissenschaften"). The Society had no observatory but nevertheless an astronomer, Gottfried Kirch, who observed from a private observatory in Berlin. A first small observatory was furnished in 1711, financing itself by calendrical computations.
Sankt Andreasberg Observatory
The Sankt Andreasberg Observatory Society was founded in 2008, aiming at building and operating an observatory for all people. At first, they wanted to build it from scratch on the Jordanshöhe. However, due to environmental protection constraints, it was decided in July 2013 to rent a building of the Internationale Haus Sonnenberg, about 1 km north of the originally designated site, and to repurpose it as an observatory. The constructions in and around the building were mostly financed by donations. The observatory was opened on August 22, 2014. The eastern front of the building is supposed to be extended by an observation dome.