The illusionist

This illusionist being this morning's discovery: one Sando Del-Prete, an artist who started out in insurance and who was born in Switzerland in 1937.

Asking Bing for images - search key 'sando del-prete images' - turns up all kinds of strange stuff.

A search made while attempting to get to grips with the classification of visual illusions to be found in reference 1.

Reference 1: Knowledge in perception and illusion - Richard L Gregory - 1997.