For decades people have wondered how master graphic artist MC Escher played with perspective to create his clever optical illusions. Now a British mathematician who created these 3D Lego replicas ...

It took Paul Vermeesch six months to painstakingly recreate the illusion in Lego, and the final piece ... at the various scenes and details that make this model so extraordinary.

Then you look closer and notice the detail: how the ribs are built at different lengths to create a rib "cage," how the dark-colored bricks create the illusion of shadow and throw the light ...

The brand name 'LEGO' is actually a portmanteau that ... And what it did was create an optical illusion. Because we could only see a little of something, it implied there was more that we could ...