It is in M.C. Escher's museum in den Haag (The Hague). Since it is a lithograph it was used to print a lot of copies, which are everywhere.
Lithography is a method for printing many copies of a picture. So the picture you ask about exists in many places. There is the original print, which is very valuable, and the original impression.
Art
He was an artist who specialised in repeating patterns and optical illusions.
He was an artist basically who did prints and woodcuts he usually only used black and white.