Tomás Saraceno: Cloud Cities Cloud Cities imagines alternative possible scenarios for futures, conjuring an era in which humanity ceases to negatively impact our planet’s fossil-fuel resources. Part of Saraceno’s larger body of work titled Aerocene, it shows us how it is possible to become airborne in collective sustainable environments. The Aerocene multiple artistic experiments re-calibrate our sensory systems, catalyzing the emergence of new ways of inhabiting the world. This exhibition took place in Berlin at the Hamburger Bahnhof.