An electronically implemented method of on-site visualization of building information model data, the method constituted of: loading a 3D scene comprising building information model data; receiving real time positional information comprising geographic coordinate information and orientation information; rendering a pseudo-realistic image of the loaded 3D scene responsive to the real time positional information; and displaying the rendered pseudo-realistic image. Preferably the method further provides for displaying engineering information of the building information model responsive to the real time positional information. Preferably, the pseudo-realistic image provides shadowing responsive to real time chronographic information and the received real time positional information.