The Olympic Village Berlin in Elstal was the first brick-on-brick Olympic village and is therefore the oldest Olympic village still in existence. It was built for the 1936 Olympics.
In the beginning, it was conceived to be a military base for the German army – before and after the Olympics.
After the end of World War II it was used as a Soviet military base until 1992.
This explains the mixture of old German buildings and more recent Soviet buildings and the propaganda art work on the walls being also from Germans and from Soviets/Russians.
The Olympic Village is easily reached by regional train from Berlin to Elstal and a 2km walk. The Village is open every day from April to October. While you can walk around without a tour, I highly recommend paying the 5 Euros and getting access to the buildings and all the inside information from the knowledgeable tour guide.
You can look at more photos from this video shoot on my personal blog: Photos from Olympic Village (Olympisches Dorf) – Berlin.