Prora in Rügen, Germany.
(photo + submission by Teresa Resa)
Prora is a beach resort on the island of Rügen, Germany, known especially for its colossal Nazi-planned touristic structures. The massive building complex was built between 1936 and 1939 as a Kraft durch Freude (KdF) project. The eight buildings are identical, and while they were planned as a holiday locale, they were never used for this purpose. The complex has a formal heritage listing as a particularly striking example of Third Reich architecture.