These are no colors but black and white. There are also no tessellations. Its a picture of a gallery where the windows looking in turn into a window looking outside at the buliding and a harbor. He created this peice of art work in 1956. Geometry is used in the different shapes and angles. I think if he were to use colors, his art work would be better. He paints a lot with the sky and water and it would make it even more eye-catching than it already is.
Maurits Cornelis Escher: A metamorfose de um ilusionista gráfico