Abstract: An entertainment or amusement device or structure (10), having an elongate chamber (18) bounded along it length by at least three elongate, substantially planar walls (22, 24) with at least two adjacent ones of those walls (22, 24) having reflective surfaces. The device has an image generating means (30) by which a primary image can be formed across one end of the chamber (28) so as to result in secondary images being generated by reflection of the primary image by the reflective surfaces. Also, the structure (10) is adapted to enable viewer access (20) for simultaneous viewing of the primary image and the secondary images. In the case of a structure (10), the viewer access is enabled by a gallery (20) at the end of the chamber remote from the one end (28). Typically, the reflective surfaces (22, 24), and optionally also a screen (28) of the image generating means, are defined by reflective tiles so that the secondary images, and optionally the primary image, is perceived as comprised of pixels.