Musik- und Kunstschule, Monheim am Rhein
Day-Care Center KT33, Frankfurt, 1994
Revitalization and Extention of City Hall, Kassel, 1995
Further Education Center Mont-Cenis, Herne, 1999
Philharmonics Nicolaisaal, Potsdam, 2000
Museum Giant of Glass, Oberhausen, 2002
Community centre and vicarage, Lohfelden, 2007
Masterplan Municipal Museums, Kassel, 2008
Motorway Chapel, Lohfelden, 2009
Solar Academy, Niestetal, 2010
Renovation of a listed building – the Palais Bellevue, Kassel, 2011
Energy Bunker, Wilhelmsburg, 2013
Wilhelminaberg, Landgraaf, 2016