So, you may or may not be familiar with the Penrose triangle. It looks like this.
It's an impossible object. Escher used the same concept in much of his work. In fact some of his earlier work party inspired the Swedish artist Oscar Reutersvärd to create the Penrose triangle or tribar as it is also known in 1934. Anyways this guy from West Austrilia (I don't know if that's anything like West Baltimore or West Philly but they made a point of saying West Austrilia) made a sculpture of the Penrose triangle. This is a picture of the 13.5 meter scupture in Perth, Austrilia.
Here are some more pictures of the sculpture from different angles.
