Illmensee

Illmensee is a municipality of the district of Sigmaringen in Baden-Württemberg, Germany.

History
Illmensee was mediatized to the Grand Duchy of Baden in 1803, whose government assigned the township to the district of Pfullendorf. It was reassigned in 1843 to the district of Heiligenberg, which was dissolved in 1938 into the district of Überlingen. Illmensee expanded dramatically after World War II, particularly in the 1960s, when the municipality industrialized. In 1973, as part of 1973 Baden-Württemberg district reform, the district of Überlingen was merged into a new one based at Sigmaringen.

Geography
The municipality (Gemeinde) of Illmensee is situated at the southeastern corner of the district of Sigmaringen, in the German state of Baden-Württemberg. Illmensee lies along Sigmaringen's border with the district of Ravensburg to the east and the Bodensee district to the south. The municipality is physically located in a depression formed by the Würm glaciation in the Upper Swabian hill country. The municipality's three lakes, the Illmensee itself, Ruschweiler Lake, and the Volzer Lake lakes, are glacial lakes that were also formed by the Würm glaciation. Elevation above sea level in the municipal area ranges from a high of 833 m Normalnull (NN) to a low of 667 m NN.

The Federally-protected Ruschweiler and Volzer Lakes nature reserve is located in Illmensee's municipal area.

Politics
Illmensee has three boroughs (Ortsteile): Illmensee, Illwanger, and Ruschweiler.

Coat of arms
Illmensee's coat of arms depicts a white fish leaping over a yellow, three-pointed hill upon a field of red. The coat of arms was taken from the House of Irmensee, a noble family that went extinct in Switzerland in 1591.

Transport
Local public transport is provided by the Verkehrsverbund Neckar-Alb-Donau. The municipality has since 2009 been a member of the Bodensee-Oberschwaben Verkehrsverbund.