GeoSim's 3D-city models combine a photorealistic look with the precision and completeness of geo-specific information content. This content makes GeoSim cities a supreme application platform for professionals, and at the same time an attractive media and entertainment platform for the general public applications.     GeoSim builds truly photorealistic city models. Applying photographic textures derived from aerial and street-level photographs to geo-specific geometry, GeoSim creates high-fidelity representations of buildings, roads, terrain skin and other urban landscape elements. Virtual Philadelphia 3D Model Computer Generated Image     Philadelphia, Pennsylvania     Photograph