There are ten small Jewish communities around the country (seven in Bohemia and three in Moravia), the largest one being in Prague, where close to 90% of all Czech Jews live. The umbrella organisation for the Jewish communities and organisations in the country is the Federation of Jewish Communities (Federace židovských obcí, FŽO). Services are regularly held in Prague, Brno, Olomouc, Teplice, Liberec, Pilsen, Karlovy Vary and irregularly in some other cities.