>>>Yeah, it's a question of angle and perspective. Games magazine, from time to time, used to print such photos, but much larger with people standing in impossible enclosures etc. Then they'd show the picture from another angle, and you could see where things are not attached, bars are shortened or lengthened, and such.
>>>
>>>But it's still a really neat trick.
>>
>>and if you look at the site you find some even more suprising photos. I think I'll draw the curtain over that thanks.
>
>Apologies Nicholas. The link of the "Escher" photo was emailed to me. I didnt bother to look at the rest of the url structure. Have no idea what the other images contain.

No need to apologise. Its a habit of mine to look at the root folder of a pictures, I don't know why . That one was quite a suprise. The optical illusion was a good one though :-)