Abstract: The present invention provides a method and device for producing an illusion of weightlessness. An enclosed room having walls, a floor and a ceiling defining an interior is provided. A plurality of visually polarized objects are rigidly secured to the walls, ceiling or floor to indicate an up and down direction. A user is secured into a cushioned user support member mounted in the enclosed room and rotated into the supine posture. The room is then rotated into alignment with the user's body. The room containing a rich variety of visually polarized objects having recognizable tops and bottoms still appears upright when the room and person in the support member are both rotated at an angle of 90.degree. from the upright position. The gravity sense organs in the inner ear (otolith organs) which normally indicate when the head is erect, are not powerful enough in most people to overcome the strong contradictory visual information.