The infrastructure of the city is now converging with the information infrastructure. IT cities offering residential housing, leisure, entertainment facilities, schools, hospitals and transportation are being built in diverse parts of the world from the United States and Europe to Asia, in both developed and developing nations. Cybercities combine electronic space with physical space. These cities make explicit the connection between urban design and communication, between public space and media technology. Spaces are being modified and expropriated by developments in communication technology. Technologically assisted or mediated communication has altered concepts of work and home, public and private, urbanity and community. This symposia will explore the theoretical analysis of such developments through case studies of environments ranging from London to Celebration, Florida to Cyberjaya in Malaysia and the new-urbanist type development in the city of Helmond, The Netherlands.