Architect: Will Schwarz, Dortmund Construction Time: May 1958 – April 1959 Height: 219.6 m Height to Platform: 144.7 m Height to Revolving Restaurant: 137.54 m Diameter of Platform: 14 m Height of Shaft: 173.45 m Depth of Basement: 8.1 m Diameter of Basement: 25 m Thickness of Basement Plate: 2.5 m Total Weight: 7 700 t Stability Ratio: 3.5x