Impossible Triangle on Fence
The impossible triangle (also known as the Penrose triangle) has intrigued viewers (and artists) since it was first introduced by Oscar Reutersvärd in the 1930s. In the photograph below, street artist Femoesa designed this version of the impossible triangle using a chain link fence. This particular impossible work of art was created in 2013 in the Netherlands in a city named Delft.
(via Femoesa)