XXth INTERNATIONAL CONGRESS OF PHOTOGRAMMETRY AND REMOTE SENSING Paul R. T. Newby UK Delegate to ISPRS General Assembly Peter A. Woodsford President, EuroSDR Commission 5 Jon P. Mills University of Newcastle upon Tyne David A. Holland, William Tompkinson and Adrian J. Holmes Ordnance Survey of Great Britain Stuart Robson University College London Paul Aplin University of Nottingham Simon J. Buckley and Henny Mehner University of Newcastle upon Tyne Abstract The XXth International Congress of Photogrammetry and Remote Sensing was held at the Istanbul Convention and Exhibition Centre (ICEC), Turkey, from 12th to 23rd July 2004. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in Volume XXXVof the International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences. Keywords: ISPRS Congress, photogrammetry, remote sensing, spatial information sciences Congress Overview and General Assembly The XXth International Congress of Photogrammetry and Remote Sensing was held at the Istanbul Convention and Exhibition Centre (ICEC), Turkey, from 12th to 23rd July 2004. The Exhibition, held during the second week, attracted 85 commercial companies and scientific or national exhibitors. Six Tutorials and one Workshop took place in the days immediately preceding the Congress, and attracted a total of some The Photogrammetric Record 19(108): 375–402 (December 2004) Ó 2004 The Remote Sensing and Photogrammetry Society and Blackwell Publishing Ltd. Blackwell Publishing Ltd. 9600 Garsington Road, Oxford OX4 2DQ, UK and 350 Main Street Malden, MA 02148, USA.