Abstract: A method and system 5 for generating a three-dimensional world model for simulated real terrain optimized for a personal computer. Terrain data and other environmental data are acquired from at least one of a plurality of digital data sources 9 through an acquisition step 20 and the acquired data are processed in a transformation and formatting step 25 to construct a predetermined intermediate database format 30, from which intermediate database, in response to a user query 40, introduced through a query interface program 45 that is visible on a personal computer monitor 11, the data are further extracted, processed and composited in a formatting step 32 to create a three-dimensional world model file 35. The 3-D world model format 35 is optimized for a particular imaging system, preferably a browser that renders standard Virtual Reality Modeling Language 2.0 specification files, that allows the 3-D model to be viewed and navigated on the computer monitor 11.