The Anamorphic Pyramid - Easy-To-Build Hallway 3D Effect Papercraft For Kids - by Papermau - Download Now!

I saw on a Chinese retail website an object that simulated a corridor full of picture frames, but it was actually a kind of pyramid with a flattened top that, when viewed from above, gave the impression of depth. The frames on the walls, as well as the ceiling and floor, were printed on the sides of this pyramid, but when you cover one eye and look at the pyramid from the top, you see,