This is your last chance to look at the picture again - really look at it - before we tell you what you're really seeing.
Perhaps you think that, on first glance, it's a photo of a huge crowd of people at a festival or outdoor concert, with bright glaring lights engulfing a funkily designed stage.
A 900,000-litre per hour filtration system. This cat only has eyes for Estonian BMX riders. But if you catch it on the right day, fog envelops the city, laying just low enough for the 14th-century fortress to stick out above the clouds.
The castle in the sky. You can even scuba-dive inside it. Do you feel represented by fashion? How about the brick wall optical illusion that went viral last year?
Finally, there was this image of a young girl who appeared to be totally underwater. If you want an excuse to see one of the largest medieval fortress in Europe and walk in the clouds, this one's easy — you'll only need to climb about 85m of steps to see the sky.
Lots of men cannot understand this joke about curled hair. Take a closer look, then read on to see what the photographer had to say.
Glastonbury, perhaps? Surfing the sky.
Normally the Festung Hohensalzburg that's the castle sits above the picturesque Austrian city of Salzburg. Our only question: Inside the hotel, guests marvel at the 25m-high aquarium. The next day we printed the photo, attached it to Libor's helmet and did everything again. Someone took this pic for the internet. Let us know which one you think it is in the comments.
Take a second, and see if you can figure this one out. What is going on here?! You'll just have to trust your eyes and make up your own mind... City swimming.
What's the first thing that comes to mind when you look at this picture? Noughty Boys: