Stereo pair images of Chicago, taken from the Sears tower.
I know it's not very nice to post things like this, because I know more people who can't do "Magic Eye" than who can. It's like posting music that only people who can wiggle their ears can actually enjoy. But if you are good at diverging or crossing your eyes to see 3D, these are a lot of fun. Personally, I have to save them and then resize them in order to do it... And I'm better at the cross-eyed ones. But I love it.
I really want to try this myself, so you might see some clumsy attempts one of these days...
In the meantime, it's inspired me to look up some more links. So here're some beautiful portraits (cross-eyed variety).
And, because we're planning a vacation in the area, canyons in Arizona and Utah (you choose your viewing format with a widget below the image.)