This work proposes a way of promoting and protecting National Parks, by creating a 3-D Virtual Environment of desired areas. The studied area belongs to the Cheile Bicazului – Hășmaș National Park which is situated in the Eastern Carpathians, Romania. Geologically it belongs to the Tulgheș – Hășmaș – Ciuc syncline and encompasses two nappes: the Bukovinian overthrust nappe and the Hășmaș gravitational nappe. To be able to create the virtual environment it have been used seven software: QuantumGIS (for DTM and maps preparation); Move3D and GSI3D for subsurface 3-D modeling; RecapPhoto, Project Memento and Mehslab for “Structure from Motion” Photogrammetry modeling; Sketchup pro trial for anthropic structures modeling; Virtual Terrain Project for combining all the data into a single space, thus making the 3-D virtual environment. The final model can be used both by general public for preliminary exploration and by scientist for different simulations (erosion, forwarding or reversing existing deformations).