The book contains the proceedings of the 11th CAAD Futures conference which took place at Vienna University of Technology, June 20-22, 2005. The papers in this book cover a wide range of subjects and provide an excellent overview of the state-of-the-art in research on Computer Aided Architectural Design. The following categories of articles are included:- Building information modelling and construction management;- Design methods, process and creativity;- Digital design, representation and visualization;- Form and fabric: Computer integrated construction and manufacturing;- Human-machine interaction design: Connecting the physical and the virtual;- Knowledge based design and generative systems;- Linking education, research and practice;- Virtual heritage, reconstruction and histories. Information on the CAAD Futures Foundation and its conferences can be found at: http://www.caadfutures.org. Information about the 2005 Conference and this book is available from: http://info.tuwien.ac.at/cf2005.