Here in Montreal, they have ads that say "Faites voir vos fesses" (have your buttocks looked at.) The ads include photos of someone's rear end. See for yourself - http://bureau206.blogspot.com/2010/08/faites-voir-vos-fesses.html
Somewhere along a highway in the Czech Republic, there's a restaurant inside an airplane. Here's a picture: http://i80.photobucket.com/albums/j175/muzition/WIYSO%20Europe%202008/175_weird_place.jpg
I don't think I'll ever hear that opera music again without picturing that now...ew.
I thought the 4th dimension was time?
Of course, humans are also an invasive species.
See for yourself - http://bureau206.blogspot.com/2010/08/faites-voir-vos-fesses.html
(I hope I'm permitted to link that)
Unfortunately, I haven't been inside it.
^It looks like Neatorama has a spammer.