Garrensee is a
lake
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
in
Ziethen,
Kreis Herzogtum Lauenburg
Herzogtum Lauenburg ( en, Duchy of Lauenburg; ) is the southernmost ''Kreis'', or district, officially called Kreis Herzogtum Lauenburg (), of Schleswig-Holstein, Germany. It is bordered by (from the west and clockwise) the district of Stormarn ...
,
Schleswig-Holstein
Schleswig-Holstein (; da, Slesvig-Holsten; nds, Sleswig-Holsteen; frr, Slaswik-Holstiinj) is the northernmost of the 16 states of Germany, comprising most of the historical duchy of Holstein and the southern part of the former Duchy of Sch ...
,
Germany
Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...
.
Lakes of Schleswig-Holstein
{{SchleswigHolstein-geo-stub