||The success of URBAN2001 dose not cancel the fact that its objectives are still to be completely addressed. As a matter of fact, this workshop was and remains a unique forum for urban remote sensing with respect to the Information Technology and Geoscience community. Among these people there is still the feeling that we need a way to interact on this topic and gather the different know-how that has been developed internationally. This point is even more urgent especially now that new sensors have been put on orbit (Quikbird and Envisat are just examples) and are already operational. Therefore, the objectives of URBAN 2001 still hold, including: gathering people coming from industry, academia, local and national/international agencies together to discuss of topics related to remote sensing for urban monitoring; fostering the research and the applications of already available data sets over urban areas, with a special look to high resolution satellite data and data fusion; providing new ideas for developing sensors and/or systems able to analyze and monitor urban areas; improving the knowledge and the know-how by means of the interaction of researchers coming from different communities (town and regional planning, engineering, photogrammetry, geology, hydrology ).