To share some background news, the story is I finally gave up (to all the pressure from my friends)  and started playing some online poker. What I found out, is that there are literally...

Open this image in full-size. Are those concentric circles, or one continuous spiral? Let us revisit the Seemingly Bent category. We hadn’t had unique optical illusion that belongs to...

Can you find the fault in these two vintage puzzle cards? I admit it is much easier when you know what you are looking for, but this time I haven't even a clue what the real question should be....

Are these poles straight and parallel? I’d like to thank you for your replies, yesterday. I learned some new things, but also got an affirmation to some of my previous beliefs. What I’m even more proud of, is that our little community has finally...

This photo you see on your right, was taken with iPhone. Reportedly, the propeller was spinning at somewhere around 2000 rpm. I’m pretty sure you’ll agree with me that the effect is rather weird, since the image came out so seamless. I need your...

As he said in his own words, Emil is a great admirer of our posts. Passing by a store nearby where he lives, Emil noticed an interesting illusion and decided to take a picture of it, so he can share it with us. It took some time before I understood...

While we’re still discussing dimensions, there’s an interesting artwork discovered by Chelle and Pedro Rato (thanks for notifying me guys)! Would you believe me if I told you, that this custom-made backyard deck is actually flat as it can be?...

David L’Heureux found this animated Gif online, and decided to share it with us. As the logic of the flowing object below is more than my mind can comprehend, I have to make a reference to the 4D Hypercube we talked about years ago. Even though...