Karl-Liebknecht-Straße is a major street in the central Mitte district of the German capital Berlin. It is named after Karl Liebknecht (1871–1919), one of the founders of the Communist Party of Germany. The street connects the Unter den Linden boulevard with the Prenzlauer Allee arterial road leading to the northern city limits. Although part of the street dates back to medieval times, most of the buildings at its side were built in the 1960s, when East Berlin's centre was redesigned as the capital of East Germany.