Schwerbelastungskörper
The Schwerbelastungskörper (German: "heavy load-exerting body") is a large concrete cylinder located at the intersection of Dudenstraße, General-Pape-Straße, and Loewenhardtdamm in the northwestern part of the borough of Tempelhof in Berlin, Germany. It was built by Adolf Hitler's chief architect Albert Speer to determine the feasibility of constructing large buildings on the area's marshy, sandy ground.