For several decades Brutalist buildings were vilified as architectural eyesores, and torn down or left to decay. Does the current hype herald a reversal in this trend? The global online initiative SOS Brutalism – which has already compiled over 1000 buildings in a database (www.SOSBrutalism.org) – inspired a major exhibition project at the Deutsches Architekturmuseum in Frankfurt. The exhibition to have emerged from the global online platform offers, for the first time, a world-wide survey of Brutalist buildings completed on every continent between 1853 and 1979. What societal developments, which architectural and political ideas provide the context for this international phenomenon? However the exhibition also pursues the question of whether Brutalism can even be defined, or how, and addresses possible strategies for renovation in line with accepted conservation practice.