Various artists

Gianni A. Sarcone

Italian resaurant illusion

Impossible Nature Morte

Impossible screws and washers

The real piano bar

Upstairs

Impossible Math Objects

Virtual Bank

Impossible puzzler

Souvenir from Utopialand

Gymnasts

Time Bretzel

Evanescence of Love

Going Down By Going Up

IKEA tribar

Impossible tower

Acrobat girl

Three soldiers

These images were found at
http://www.archimedes-lab.org