This image is of a work created by M.C. Escher and it is an example of spatial illusion. Spatial illusion is similar to kinetic illusion in that it alters our perception of what we are seeing and what we should be seeing. However, kinetic illusion focuses on those illusions which also include movement. In this image, there is a walkway at the top, which, in one way, seems to lead down to a lower part of the building [or up, to a higher part of the building, depending on where one starts to view it]. At the same time, this walkway also seems to stay at the exact same level. It is attached to a higher part where water is falling far down to a lower part of the building. This shows that the walkway is high up. However, the walkway also connects to stairs which are on a lower part of the building. These mess with our perception of the picture overall and can puzzle our brains, which is why the image is considered an illusion and a spatial illusion because it is an illusion dealing with space as opposed to movement.
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