b. Vienna, Dec. 13, 1942, professor at the University of Applied Arts in Vienna and Helmut Swiczinsky, b. Poznan (Poland), Jan. 13, 1944. Offices in Vienna and Los Angeles; experimental architecture (initially related to actionism), then constructions and projects influenced by deconstructivist methods of design. The C. H. work with objects and elements that overlap and penetrate each other ("crashed roofs", "frozen wings"). German Prize for Architecture 1999; Grand Austrian State Prize 1999.
Works#in Vienna: Reiss-Bar, 1977; Atelier Baumann, 1984/1985; Wahliss-Passage, 1985/1986; ridge turret at Falkestrasse, 1987/1988; renovation of the Ronacher Theatre, 1987; SEG Apartment Tower, 1998. - Melun-Senart, urban planning, France 1987; Funderwerk 3, St. Veit a. d. Glan 1988; Construire le Ciel, exhibition at the Centre Pompidou, Paris 1992; museum in Groningen, Netherlands, 1994; office building for the Seibersdorf Research Institute, 1995; Haus Rehak, Los Angeles 1995; UFA Cinema Center, Dresden, 1998.