Optical illusion made out of only perspective notions and a huge paint job.
perspective
Pespective illusion
3D optical illusion by messing with perspective.
Pespective illusion
Painting the walls of a room may be enough.
Pespective illusion
Pespective illusion
It’s all a matter of perspective.
Pisa tower
A very usual picture for tourists in Pisa (Italy), with a variety of options.
Pavement drawings
It seems difficult to believe but these drawings are nothing more than chalk on the surface of a pavement leading to perspective effects inducing dizziness and vertigo.
Source: Julian Beever.