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 leading galleries for postwar and contemporary art. Several orchestras are active in the city, among them the Gürzenich Orchestra, which is also the orchestra of the Cologne Opera and the WDR Symphony Orchestra Cologne ("German State Radio Orchestra"), both based at the Cologne Philharmonic Orchestra Building (Kölner Philharmonie). Other orchestras are the Musica Antiqua Köln and the WDR Rundfunkorchester Köln, and several choirs, including the WDR Rundfunkchor Köln. Cologne was also an important hotbed for electronic music in the 1950s (Studio für elektronische Musik, Karlheinz Stockhausen) and again from the 1990s onward. The public radio and TV station WDR was