was restored and thus the station has open air access and natural light to one side. The former moat has been pedestrianized. The route continues to Nuremberg Hauptbahnhof, serving the other main interchange point (all subway lines; 3 out of 5 tram lines) in the network besides Plärrer. Afterwards the line heads north to the Wöhrder Wiese station. Due to its location in the valley of the river Pegnitz, the station had to be lowered and the northern branch of the Pegnitz had to be incorporated into the station building, which can be seen in the relatively low ceiling, which extends across the entire station. The following route runs under the Laufertorgraben and steeply climbs towards Rathenauplatz station, which can be observed in the station itself, as the ceiling from the southern to the northern platform has a significant difference in height. Rathenauplatz station named for the slain politician and industrialist Walter Rathenau is the last station U2 shares with U3 and also allows interchange with tram line 8, making it one of the busiest stations in the network. After the Rathenauplatz station, the route initially runs under the Bayreuther Straße, turns right to the Rennweg station under the street of the same name and continues under Schoppershofstraße to the Schoppershof station. Between this and the following station Nordostbahnhof under the Leipziger Platz the two tracks run together in the same single bore tunnel. This is opposed to most of the rest of the line where the two tracks run in separate tunnels. There is a parking and turning system under the Bessemerstraße in a tube shared with the city-side track. After that the station Herrnhütte station is found at the junction with the Äußere Bayreuther Straße. Then the route takes a narrow counter arc under housing development to the station Ziegelstein beneath Fritz Munkert Platz, at whose northern end is another parking and turning system. The two railway tracks are then merged and run as a single-track tunnel in a westerly direction to the terminus station serving the airport. Due to the long single track section between Ziegelstein and Airport, only one train every ten minutes continues to the airport with most trains during the day terminating at Ziegelstein. This was formerly indicated by short terminating trains being indicated as "U21". The station serving the airport has two platform tracks but usually only one is in use for passenger