The groundbreaking work of the Atelier Haus-Rucker-Co with titles like Ballon für zwei / Grüne Lunge / Sauerstoffquelle / Eingewobene Natur attracted much attention in the 1970s and 80s. The Oase at the legendary documenta 5, 1972, and the frame above the Karlsaue, 1976, were the most photographed works in Kassel. The increasing mobility and the space flight with its space capsules, space suits and the stay in space made the architecture made of stone, which was designed for eternity values, appear outdated in their eyes. The radically groundbreaking “inventions” of the team of artists and architects took place on paper. In excellent, mostly coloured drawings, collages and enchanting models they simulated architectural, avant-garde art spaces, life situations of the future, architecture as a mixture of technology and nature, pneumatic buildings, innovative objects and possible solutions to the topic of environmental pollution. This edition presents almost the complete archive of Haus-Rucker-Co, which is still not accessible today. It provides access to an important and extremely stimulating source on the history of contemporary architecture. Haus-Rucker-Co, founded in 1967 by the Austrians Laurids Ortner, Günter Zamp Kelp and the painter Klaus Pinter. In 1970 Manfred Ortner joined the group. Offices in New York (1970-1977) and Düsseldorf. In 1987 Laurids Ortner und Manfred Ortner founded the joint architectural office Ortner Architekten in Düsseldorf. Since 1990 Ortner & Ortner Baukunst in Vienna, since 1994 in Berlin and since 2006 in Cologne. 2011 O&O Baukunst, with partners partners Roland Duda, Christian Heuchel, Florian Matzker and Markus Penell.