Yes that's the Main station of Nuremberg, the Tunnel in 18:25 allows the tram to cross all 23 train tracks of the main railway station, an the station building itself is original from 1906
By the way, the both bridges (on above track und the other under the tram) seen at around 5:18 -5:39 are the shunting station (Rangierbahnhof) of Nuremberg, which is even wider then main passenger station. By the way, this is my hometown, so if you ever might be in the area, I could show you some interesting rail spotting points.
