Ludwigshafen Hauptbahnhof is a huge station, its impressive pylon bridge pier serving as the city's landmark. The extraordinary architecture of the station complex is caused by the need to connect three joining tracks (to Frankenthal/Worms/Mainz, to Neustadt/Speyer and to Mannheim) and to work in the underground Straßenbahn station and the massive road bridge above the concourse. Other railway stations are at Oggersheim, Mundenheim, Rheingönheim, and, the new more central Ludwigshafen (Rhein) Mitte, near Berliner Platz. Since 2003, the S-Bahn Rhein-Neckar suburban train system runs successfully in the region.