1926  born in Kaisersesch / Eifel
1950  diploma in architecture at the Technische Hochschule
          Karlsruhe
1964  opens his architectural office in Cologne / Germany
1964  opens his architectural office in Berlin
1963  professor and from 1965 dean of the faculty of
          architecture at the Technische Universität Berlin
1967  professor and from 1969 chairman of the faculty of
          architecture at the Cornell University, Ithaka NY
1973  apoint to a professorship at the Harvard University
1974  professor at the UCLA in Los Angeles
          eröffnet Architekturbüro in Frankfurt am Main
1979  professor at Hochschule für angewandte Kunst Vienna
1983  opens his architectural office in Karlsruhe
1986  professor at the Kunstakademie Düsseldorf
1988  honorary honorship at the Bund Deutscher Architekten
1997  receives Great Cross of Merit
2007  passed away in Cologne