Leopold-Hoesch-Museum, Düren, start of construction not specified
Fire and Rescue Station, Leverkusen-Opladen, completed 2007
Robert Bosch GmbH, training center building, Stuttgart, completed 06/2004
Residential and Administrative Complex in Double Towers, Regensburg, 12/2003
Konzerthaus Berlin, renovation of foyer and Werner Otto hall, Gendarmenmarkt, Berlin, 2003
Multimedia Center II, Hamburg-Rotherbaum, completed 12/2002
Family House Trilsbach, Cologne n. R., 02/2001-03/2002
Königsmünster, 6 buildings (with Konstantin Pichler), Meschede, Saarland, 2000
Gartenbaumuseum, museum of German horticulture, Cyriaksburg, Erfurt, 2000
Residential and Administrative Complex, Dagobertstrasse, Cologne, completion not specified
Sports Stadium, project (with Ulrich Königs and Cecil Balmond), Chemnitz, 1996
Festspielplatz Hellerau, project for exhibition pavilion, Dresden-Hellerau; 1996
State Parliament - project, Potsdam, 1995
Faculty of Industrial Sciences, TU Magdeburg, 1994-98
Sports and Cultural Center, Meiningen, 1994-98
Guest House with Office, Schlossallee, Moritzburg, 1994-95
EL-DE Haus, documentation center for Nazism, Cologne n. R., 1993-97
New construction of annex buildings and underground garages, Siemens AG, Düsseldorf, 1991-97
Retirement Home St. Bruno, Karl-Begas-Straße 2, Cologne n. R., 1982-1984
House Maternus (with Hans Schilling), Kardinal-Frings-Straße, Cologne n. R., 1979-83
Bielefeld University (with Köpke, Töpper, Herzog, Siepamann), 1970-76