Friedrich Wilhelm III of Prussia, had an extensive collection of animals, acquired personally or as gifts from others. His son, who inherited his throne, did not share this passion. Thanks largely to the efforts of Martin Hinrich Lichtenstein, a professor at the Berlin University, animals, land and buildings were donated by the king and in 1844, the zoo was opened.
A complex of over 60 buildings, Beelitz-Heilstatten began life as a sanatorium in 1898. By World War I, however, it became a military hospital for the Imperial German Army, and would have the dubious distinction of treating a young Adolph Hitler in October and November of 1916 when wounded during the Battle of the Somme.
In November, 1938, approximately 500 male prisoners were sent from the Sachsenhausen Concentration Camp to begin construction of Ravensbruck. Unlike other concentration camps being constructed, Ravensbruck was intended specifically for female prisoners.
The bakery was built in 1939 as one of many businesses to be run by the German SS. Because the war was already making raw materials difficult to acquire, it didn't actually open until 1941.
As the facilities at Peenemunde were being constructed, the war was already taking men and material away from the project. Initially, it was attempted to make the V-2 project a high-priority project, guaranteeing the supplies and manpower required, but since Hitler was still not convinced that rockets were the answer to the war, he vetoed those attempts.