Last Year I went to the Baltic Sea in East Germany and visited this monumental, colossal Nazi-planned Building at Prora.
The enourmous building complex is 4.5 kilometers (2.8 mi) in length, and was built around 1936. It was called Strength Through Joy (Kraft durch Freude or Kdf) project.

The eight identical buildings were planned as a holiday beach resort, they were never used for this purpose. The complex is an example of Third Reich architecture.
Designed by Clemens Klotz, who won a design competition overseen by Adolf Hitler's chief architect Albert Speer, all rooms were planned to overlook the beach. There were communal toilets, showers and bathrooms on each floor.