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An der Alster (Hamburg).jpg
Location Hamburg
Coordinates 53°33′54″N 10°0′36″E / 53.56500°N 10.01000°E / 53.56500; 10.01000Coordinates: 53°33′54″N 10°0′36″E / 53.56500°N 10.01000°E / 53.56500; 10.01000
Type artificial lake
Primary inflows Alster
Primary outflows Binnenalster
Basin countries Germany
Surface area 1.6 km²

Außenalster or Outer Alster Lake is one of two artificial lakes within the city limits of Hamburg, Germany, which are formed by the river Alster (the other being the Binnenalster). The size of the Außenalster is 1.6 km².[1]

The phrase "outer" refers to the old city walls of Hamburg. The Außenalster was the part of the lake that was "outside" the city walls. Today the old city walls do not exist, instead two car and train bridges, the Lombardbrücke and the Kennedybrücke, span the river.

The Außenalster is used by the inhabitants of Hamburg for recreational purposes such as sailing and rowing. Almost all banks of the Außenalster are public. The banks vary from a small strip of green to large public parks (e.g. the Alstervorland). It is very popular to jog around the lake (approx. 7 km).


  1. ^ Source: statistical office Nord of Hamburg and Schleswig-Holstein (2006)


  • Statistical office Hamburg and Schleswig-Holstein Statistisches Amt für Hamburg und Schleswig-Holstein Statistisches Jahrbuch 2006/2007 (ISSN 1614-8045)

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