If you tried to walk up or down these stairs to get to the top or the bottom, you would find yourself walking for a very long time.

This is a variation of the Penrose Stairs created by Lionel and Roger Penrose in 1959.

More of Andreas Aronsson’s impossible figures can be viewed on his website.  You may also be interested in revisiting his Hoops impossible drawing that was previously featured on An Optical Illusion.

What do you see here?  A view of a lake with mountains behind it?  Or do you see something else?

There is no lake in this picture.  What most people perceive to be a body of water is actually a short wall.  What did you see when you first looked at the picture?

Do you notice anything remarkable about Saint-Georges Theatre shown below?

It appears that the side of the building is covered in windows.  In reality, most of them were painted onto the building by mural painter Dominique Antony.  In fact, all of the upper windows are fake with the exception of the one on the far right.  The photograph below shows how the building looked before its trompe l’oeil transformation.

Robin Hunnam creates stunning digital op art.  He studied graphic design at Ravensbourne College of Art and Design and previously worked as an art director at an advertising agency in London.  He cites Bridget Riley, Victor Vasarely and M. C. Escher as artists who have influenced his style.   His work below features several hollow Necker Cubes connected to one another.  As you look at it, can you make the ambiguous cubes flip-flop back and forth?

To view more of Robin’s work, please visit his blog – Grasshoppermind.

The four squares appear to float on top of the wavy pink background.  As you watch this image, the background seems to flutter slightly to both the left and the right.This illusion was designed by French artist Daniel PICON.

Take a careful look at this image.  What is the first thing that you see?

Did you happen to see the handprint first or the king of the jungle?  For another optical illusion featuring a lion, check out the ambiguous Lion or Monkey by Humberto Machado.

Edgar Mueller is a very talented pavement artist who has created a number of outstanding works.  The time-lapse video below demonstrates how he created ‘The Crevasse’, which happens to be one of my favorite 3D street art pieces.

It is very interesting to watch how far back the team starts the painting so that it appears to have depth when seen from the viewing angle (i.e., where the camera is).   For more information on Edgar Mueller, please visit his website.