Some optical illusions have gone viral, dividing the internet and stumping everyone online. Others you'll only find in nature.
Architects and artists also have clever ways of confusing your eyes. Their designs can trick you into seeing two-dimensional paintings as three-dimensional objects. They can add giant dents to a completely flat floor. And they can make skyscrapers seemingly disappear into thin air.
Take a closer look below at 11 buildings from around the world that will leave you questioning what's real and what's an illusion.
This photo of a warped building isn't Photoshopped at all.
The building in this picture may look like it's melting, but it was actually a temporary mural created by artist Pierre Delavie in 2007. Located at 39 Avenue George V in Paris, France, this building was under construction at the time this photo was taken. To conceal the construction site, Delavie designed a printed canvas to look like a distorted building and draped it over the real building's facade.
Don't worry — this house isn't actually sinking.
Also located in Paris, France, this building sits behind a grassy bank near the Sacré-Cœur Basilica at the summit of Montmartre.
Here's what it actually looks like.
According to travel bloggers Brenna Holeman, of This Battered Suitcase, and Sophie Nadeau, of solosophie, you can find this orange building while climbing the steps to get to the Sacré-Cœur. Since you're scaling a hill, when you take a photo of this building, it will be partially covered by the grassy bank at a 45-degree angle.
To create the illusion that the house is "sinking," simply rotate your camera until it's parallel with the bank — the ground will appear flat instead of at an angle. You can also take a normal photo and edit it later for the same effect.
See the rest of the story at Business Insider