Abstract: A 3D visual realization system and method of use thereof. The system operatively interfaces to a CAD application and converts the design data to models that are then stored in Quadtree data structures in a database. A graphic engine streams the data out of the database. The graphic engine decides which data segments are required, fetches the required data and displays the data on the designated media. Smart management of the computer memory including keeping handy and relevant in the memory, and ability to provide a high frame rate enables smooth display of the 3D visual realization of the project. The 3D visual realization system and method further includes a method to cut out selected regions of a topographical mesh and replacing each region by implanting a redesigned graphical presentation of the extracted region.