Revitalizing cities and increasing urban qualities will become increasingly crucial goals for planners in the coming decades. The authors envision the use of collaborative environments and decision support tools to forge ahead in planning agencies of cities and regional institutions. Such agencies and institutions will adopt dedicated facilities in order to visualize proposed scenarios for all involved stakeholders and enhance the planning of sustainable future cities. Additionally, expert tools for simulation will become increasingly interactive and therefore more usable for non-experts. The link of collaborative environments with interactive virtual environments, portable devices and social networks will support these goals.