Karl-Liebknecht-Straße is a major street in the German capital Berlin, Mitte district. It is named after one of the founders of the Communist Party of Germany, Karl Liebknecht. It connects the boulevard Unter den Linden with the arterial road Prenzlauer Allee, leading to the northern border of the city. Although part of the street dates back to the earliest times of the city, most of the buildings at its side were built in the 1960s, when East Berlin's center was redesigned as capital of socialist East Germany.
Karl-Liebknecht-Straße starts at the Schloßbrücke (“palace bridge”) on Spree Island as part of the German federal highways B 2 and B 5. On the left lies the Lustgarten, on the right Schloßplatz with the remains of the Palast der Republik. The street runs northeast, crosses the Liebknechtbrücke, leaving Spree Island, and meets Spandauer Straße, where the Bundesstraßen turn to the right. Karl-Liebknecht-Straße continues northeast, passing the Fernsehturm and Alexanderplatz through the old Königsstadt quarter to the border of Mitte borough. There, at the place of the old Prenzlauer Tor (“Prenzlau gate”) it crosses Torstraße and Mollstraße and continues as Prenzlauer Allee to the north of the city.
At its start, Karl-Liebknecht-Straße passes two of the most prominent sites of Berlin, the evangelical Berlin Cathedral (official address: Am Lustgarten 1) and the former Palast der Republik (official address: Schloßplatz 1), which is currently being dismantled. In the future, probably starting in 2009, the Berlin City Palace will be rebuilt at this place.