optical illusions These boxes aren't moving – an optical illusion I can't explain Mark Frauenfelder

horses Incredible video of horses appearing to walk on water David Pescovitz

optical illusions The Rakotzbrücke devil's bridge creates the illusion of a circle when it is reflected in the water beneath it Popkin

optical illusions In this 3D-printed sculpture, how does the ball defy gravity and roll uphill? David Pescovitz

optical illusions The bizarre "scintillating grid illusion" Mark Frauenfelder

optical illusions Does your perception of this optical illusion tell you something about your personality? David Pescovitz

mind hacks Optical illusion delivers incredible depth without having to cross your eyes and get a headache David Pescovitz

optical illusions The Phantom Queen is an awesome optical illusion Mark Frauenfelder

optical illusions A driver experienced this astonishingly weird and scary optical illusion in a tunnel David Pescovitz

optical illusions This hollow mask illusion fools me every time Popkin

perception Check out this stunningly strange double optical illusion David Pescovitz

optical illusions This "changing room illusion" made me realize how unobservant I am Mark Frauenfelder

impossible objects Behold, an impossible portal into another dimension where perception is in the eye of the beholder David Pescovitz

cognition These are the best optical illusions of 2021 David Pescovitz

optical illusions Watch: These rotating cubes are definitely moving — except they're actually not Carla Sinclair

strijdom van der merwe This "Staircase to Heaven" is actually just a beautiful illusion Carla Sinclair

weird brain things Why your brain makes these dots disappear Thom Dunn

perception This is not a color photo but rather an astonishing optical illusion David Pescovitz

high on life Stare at the center of this video, then look around your room and hallucinate Popkin