1. A geospatial data system comprising: at least one geospatial data storage device containing three-dimensional (3D) geospatial structure data, and also containing geospatial texture data associated with the geospatial 3D structure data and being retrievable in successive additive layers of resolution; and at least one geospatial data access device comprising a display and a processor cooperating therewith for communicating with said at least one geospatial data storage device to retrieve and display a scene on said display based upon the 3D structure data and the geospatial texture data associated therewith, the geospatial texture data being retrieved and displayed in successive additive layers of resolution.