PENROSE TRIANGLE The impossible triangle (also called the Penrose triangle or the tribar) was first created in 1934 by Oscar Reutersvärd. Roger Penrose attended a lecture by M. C. Escher in 1954 ...

Explore the fascinating process behind welding an impossible triangle, also known as the Tribar. This iconic shape, famous for its mind-bending optical illusion, has puzzled artists ...

Ulrich Schwanitz claims to have created a 3-D Penrose triangle without resorting to the usual optical illusions. We'll believe it when we see it.