Escher-montage

Kopfinger

Monastery from Escher's artwork "Ascending and Descending" is used in this photo montage.

Artist's deviantART profile http://kopfinger.deviantart.com

Escher Zum Mitnehmen
Escher Zum Mitnehmen

Impossible triangle
Impossible triangle

Images were found at

Image with impossible triangle is based on photo by Rebecca Frampton (rifka1).