1. A method for generating 3D visualization of a large-scale environment, the method comprising: acquiring a 3D model of said large-scale environment; dividing said 3D model into a near-field part and a far-field part; creating at least one rendered image representing at least one perspective view of said far-field part; creating 3D visualization of said near-field part combined with said at least one rendered images of said far-field part.