Like all of Poland, Wrocław's population is predominantly Roman Catholic;
the city is the seat of an Archdiocese. However, post-war resettlements from
Poland's ethnically and religiously more diverse former eastern territories
(known in Polish as Kresy) and the eastern parts of post-1945 Poland (see
Operation Vistula) account for a comparatively large portion of Greek Catholics
and Orthodox Christians of mostly Ukrainian and Lemko descent. Wrocław is also
unique for its "Dzielnica Czterech Świątyń" (Borough of Four Temples)
— a part of Stare Miasto (Old Town) where a Synagogue, a Lutheran Church, a
Roman Catholic
