Le Nôtre employed an optical illusion called "anamorphosis abscondita" (which might be roughly translated as 'hidden distortion') in his garden design in order to establish decelerated perspective. The most apparent change in this manner is of the reflecting pools. They are narrower at the closest point to the viewer (standing at the rear of the château) than at their farthest point; this makes them appear closer to the viewer. From a certain designed viewing point, the distortion designed into the landscape elements produces a particular forced perspective and the eye perceives the elements to be closer than they actually are. That point, for Vaux-le-Vicomte, is at the top of the stairs at the rear of the château. Standing atop the grand staircase, one begins to experience the garden with a magnificent perspectival view. The anamorphosis abscondita creates visual effects, which are not encountered in nature, making the spectacle of gardens designed in this way extremely unusual to the viewer (who experiences a tension between the natural perspective cues in his peripheral vision and the forced perspective of the formal garden). The perspective effects are not readily apparent in photographs, either, making viewing the gardens in person the only way of truly experiencing them.