Espenthor is a place, that after the Treaty of Saint-Germain belonged to Czechoslovakia and was situated in the administrative region Karlovy Vary.
Espenthor was formerly part of the German Empire. In the German Empire, the place was called Espenthor (Karlsbad-Espenthor). The place is now called Olšová Vrata (Karlovy Vary-Olšová Vr.) and belongs to Czech Republic.