A web page recommended to me by a friend turned out to be amazing, creepy, and interesting all at the same time: Images You Won't Believe Aren't Photoshopped Parts 1, 2, 3, and 4 (links at the bottom of post).
Here are some select pictures from the pages:

At first sight, this appears to be a home improvement project that accidentally tapped into Stephen Hawkings' most abstract theories on space and time. But then you notice that the kid who is right next to the portal to another dimension isn't disintegrating into millions of pieces, or even looking up from his goshdarn cellphone.
The Inversion House is an art project that answers the pressing question: what would your neighbor's place look like if it was sucked through a straw in the Looney Tunes universe? The answer is pretty cool, though apparently not nearly as cool as whatever 13 year-olds are texting each other these days.

This undoctored photo is part of an art project--and possibly also an awesome assassination scheme--where they meticulously paint clothing to match the surroundings.
We can't imagine how much time they must have put into creating photos that, after all that effort, will be dismissed as Photoshop by nearly every single viewer, including myself at first.

"What's that White Stuff on the Trees? It Almost Looks Like Some Kind of Web... OH SHIT-"
"If you're arachnophobic and are getting short of breath looking at what looks like the work of a giant spider, don't worry. It's actually a freak massive spider web created by millions of spiders working together in ways science previously did not think was possible.
Sleep tight."
DEAR LORD. I seriously panicked when I saw this picture. Tapping in to my phobia yet again.

Holy crap, look at that thing. I was hoping that was just a tiny trash can but, no, it's a coconut crab, which is the biggest land-living arthropod.
We like how they chose the innocuous name "coconut crab" to describe something that can only be killed with a flamethrower. If these things were called "Skull Crabs" or "Under Your Bed Crabs" mankind would have declared war on them long ago. Would NOT want that finding its way into my room at night.