Stuttgart Schwabstraße station

Schwabstraße underground station is in Stuttgart-West district, west of the centre of the German city of Stuttgart and was at the end of the first section of the Connection line, the original underground section of the Stuttgart S-Bahn. Several lines of the S-Bahn terminate at the station. It is notable for a 1.5 km long loop at the end of the station to allow S-Bahn trains to turn around.

Source: Wikipedia