A ventilation screen for protecting against rain water and other elements includes a plurality of air passages. The air passages enable air flow from one side of the screen to the other but preferably without linear communication between both sides through the air passages. The air passages present an upwardly traveling trajectory from the exposed space to the protected space, preferably with lateral changes of direction as well. Therefore rain water that comes directly from precipitation or splashing from an adjacent surface cannot reach a protected space. The geometry of the air passages provides protection against other environmental or man made elements.
