Abstract: A system (10) for displaying at least one virtual object includes a secondary screen (20) for displaying the virtual object, a primary screen (30), an optical element for overlaying images displayed on the secondary screen (20) with images displayed on the primary screen (30), and a pointing surface combined with the primary screen (30) for detecting the contact of one or more physical pointing elements. A device (90) for manipulating at least one virtual object includes calculation elements for generating images of the virtual object displayed on the system (10) from information output from the system (10) in accordance with the actions of the operator (100).