The Minister of Culture and National Heritage of Poland may inscribe a Polish museum into the National Register of Museums (Polish: Państwowy Rejestr Muzeów) in order to confirm the high level of its cultural activity and the importance of its collection. Only those museums that meet the required criteria – including importance of the museum's collection, a team of well qualified employees, an adequate building, and a permanent source of financing – may be entered into the register. Such museums are known as registered museums (muzea rejestrowane). A registered museum that no longer meets the criteria may be removed from the register.