Komorní hůrka
The national natural monument is only 3 km from Františkovy Lázně. It is one of the youngest extinct volcanoes in the Czech Republic with an area of 7.1 ha. In the deforested part of the hill, formed by volcanic material, there is an abandoned pit quarry, tunnel, and rock outcrops. The poet J. W. Goethe already showed an extraordinary scientific interest in it.