CityGRID, from Met GeoInfo, is a suite of management tools for digital 3D multi-scale city models. The radical data structure enables the transformation of standard off-the-shelf models from being simple ‘snap-shots-in-time’ into fully managed city models: CityGRID Manager, the core module, provides City Planners with all the functionality of a Relational Database Management System (Oracle / SQLServer) applied to their 3D data. CityGRID Modeller provides fast and efficient construction tools from a number of surveyed data formats. Data is imported directly from Manager or can be file-based (XML or CAD based). CityGRID Planner provides planners analysis tools for the assessment of design concepts. CityGRID Viewer gives non-technical audience access to high quality, interactive virtual reality simulations as a stand-alone viewer. Simple to use, Viewer enable intuitive presentation of complex projects to a wide audience.