Maurits Cornelis Escher (1898-1972) is one of the world's most famous graphic artists. His art is enjoyed by millions of people all over the world, as can be seen on the many web sites on the internet. He is most famous for his so-called impossible structures, such as Ascending and Descending, Relativity, his Transformation Prints, such as Metamorphosis I, Metamorphosis II and Metamorphosis III, Sky & Water I or Reptiles.
There are websites devoted to Photoshop tutorials and tricks. There are also Photoshop sites where you can display your creations and compete in contests.
This was the challenge image. The concept of the contest is to manipulate the picture anyway you want to using Photoshop. I had originally planned, since the photo was pretty bland to stack shift the picture to look like three dimensional boxes. What I did was to copy the image several times and then "construct" the boxes and stack them on top of each other. It looked pretty awful. Just as I was about to trash the whole concept, I used the crop tool and took square shaped piece out of the middle. I converted that to black and white, cut in a picture of man standing by the door or in the shadow and then used the twirl tool to give it a spin.
My wife and I had the good fortune to see an M.C. Escher display at the Pacific Science Center in Seattle several years ago. M.C. Escher was truly a master who spent a great deal of time and effort creating his works. I made this in Photoshop in less than an hour.