Military balloon 'Gross II' above the Berliner Stadtschloss, 1909

One of the first German military dirigible balloons of type 'Gross II' during a test flight above the baroque Koenigliche Schloss in Berlin (1443-1853, since 1698 led by Andreas Schlueter, blown up in 1950/51) . At right, the castle bridge, which leads over the river Spree., 22.02.1909 Foto: Sueddeutsche Zeitung / IBL Bildbyrå