Geistsee is a lake at

Längenbühl Längenbühl is a village in the canton of Bern, Switzerland. The former municipalities of Switzerland, municipality of the district of Thun (district), Thun merged with Forst, Switzerland, Forst on January 1, 2007 to form Forst-Längenbühl. Ther ...

in the Canton of Berne,

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

. Its surface area is . The lake is private property and not accessible by the public.Map
/ref>

References

Lakes of Switzerland Lakes of the canton of Bern LGeistsee {{bern-lake-stub