The Alster is a river in Northern Germany, a right tributary of the Elbe. It has its source near Henstedt-Ulzburg, Schleswig-Holstein, flows somewhat southwards through much of the Free and Hanseatic
Aerial view of the Alster's two lakes in Hamburg
Iron plate at the Alster's source in Henstedt-Ulzburg
Panoramic view of Kleine Alster looking "upstream"; Alsterarkaden (left), Reesendammbrücke (center) and Rathausmarkt (far right)
Osterbek is a river of Hamburg, Germany. The Osterbek has its source at Farmsen-Berne in the Hamburg borough of Wandsbek. After crossing into the borough of Hamburg-Nord, the Osterbek becomes navigabl