Tomas Saraceno: Cloud Cities The exhibition Tomás Saraceno: Cloud Cities at the Hamburger Bahnhof – Museum für Gegenwart, Berlin presents a large installation by the artist that occupies the entire space of the historical gallery. The artist’s works, which incorporate tendencies in science and architecture and, as works of art, explicitly implement natural principles in order to address immediate problems in our globalized world such as overpopulation, environmental pollution, and diminishing resources, are highly contemporary visions that embody current and potential discourses on the relationship between nature and society.