Klášter Hradiště nad Jizerou is a place, that after the Treaty of Saint-Germain belonged to Czechoslovakia and was situated in the administrative region Mnichovo Hradiště.
Klášter Hradiště nad Jizerou was formerly part of the German Empire. In the German Empire, the place was called Klášter Hradiště nad Jizerou. The place is now called Klášter Hradiště nad Jizerou and belongs to Czechoslovakia.