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; said at least one geospatial data access device further comprising at least one user input device cooperating with said processor for permitting user selection of a point-of-view (POV) within the scene on said display, the POV determining revealed portions and obscured portions of the 3D geospatial structures within the scene on the display; said processor configured to selectively retrieve geospatial texture data based upon the revealed portions and not the obscured portions of the 3D geospatial structures within the scene on the display.