German-born architect. He joined (1967) the Chicago, IL, USA, firm of architects founded by C. F. Murphy, among others, in 1937, having studied in Munich and then under Mies van der Rohe at the Illinois Institute of Technology. In 1973 he became Partner, Vice-President, and Director of the Design Section, and the firm was renamed Murphy/Jahn in 1981. Under Jahn's leadership the firm designed the Kemper Arena, Kansas City (1974), the Sports Hall, St Mary's College, Notre Dame, IN (1977), the Xerox Center, Chicago (1980), the Agricultural Engineering Science Building, University of Illinois (1984), the State of Illinois Center, Chicago (1985), the vast Messeturm block, Frankfurt, Germany (1985–91), extensions to O'Hare International Airport, Chicago (1983–7), the Sony Centre, Berlin (1995–7), the elegant ECO offices, Bonn, Germany (1999–2003), and an enormous range of very large projects too numerous to be listed here. His style moved away from the severity of Mies's work to a new richness of expression drawing on aspects of Art Deco, notably for the Frankfurt Messeturm.
Blaser (1996a);Kalman (1994);Jodidio (1993);J. A. Joedicke (1986);Klotz (ed.) (1986);Lampugnani (ed.) (1988);M. Miller (1986)
Subjects: Architecture — Art.