Innenstadt, Cologne of Cologne Stadtbahn tram and U-Bahn stations. The Cologne Ring (Kölner Ringe) is a city boulevard, encircling the old town of Cologne. It is part of Bundesstraße 55 and picks up several principal arterial roads, which lead into adjacent city districts. Innenstadt, Cologne Innenstadt () is the central city district ("Stadtbezirk") of the City of Cologne in Germany. The district was established with the last communal land reform in 1975, and comprises Cologne's historic old town (Altstadt), the Gründerzeit era new town (Neustadt) plus the right-Rhenish district of Deutz. Innenstadt has about 127,000 inhabitants (as of December 2008) and covers
Cologne City Hall gradually changed from a mainly feudal society to free citizens. Documents from the years 1135 and 1152, recorded "a house in which citizen convene", referring to the first established council hall, at the location of today's town hall. The coat of arms of Cologne, first mentioned in 1114, is Europe's oldest municipal coat of arms. By 1180, the citizens of Cologne won a legal battle against Philip I, Archbishop of Cologne, for another extension of Cologne's city walls. With the Battle of Worringen fought in 1288, Cologne became independent from the Electorate and on 9. September 1475 officially gained Imperial