A gate in Vienna, Austria, is an optical illusion. Utilizing a one-point perspective, it appears to extend back into space and makes it look like the actual wrought iron gate is much farther down the path. But thanks to its clever use of line and scale, it all sits on a flat plane.
The mind-bending gate leads to the grounds of the Theresianum Academy, a private boarding and day school founded in 1746 by Empress Maria Theresa of Austria. It has more than 100 students ranging from elementary school to upper school (high school).
The trompe-l'œil embedded within the gate is a great lesson in perspective for the students. It demonstrates how one point can trick our eye into thinking that something is farther away than it actually is. They can see this in practice when the gate opens; the extended landscape is not protruding into the distance. It's right in front of them, all at once.