Ziegelstein station is a Nuremberg U-Bahn station, located on the U2. Operated by the Verkehrs-Aktiengesellschaft Nürnberg. As the track between Ziegelstein and the terminus of U2, Flughafen is single track without passing loops about two thirds of all U2 trains terminate here during the day. Prior to 2017, these early terminating U2 trains were signalled "U21". The word "Ziegelstein" refers to the neighborhood the station serves, but is also the German word for brick.