Which of the three cut-outs below (A B or C) is the same size as the 'Big Man' on the train station and which is the same size as the 'Little Man'?
It looks like the black lines are moving down from the top right to the bottom left. But actually they are moving upwards from the bottom right to top left. Click here for the proof.
French artist Benedetto Bufalino created an fun installation entitled “La Table de Pique Nique" reaturing an over-sized picnic table when seen from a distance creates the amusing optical illusion of small people on a regular-sized table.
At least five faces hidden in this cliff face, can you spot them. Click on the optical to reveal. If you find any more please let us know in the comments. Photo credit: Unknown
Click to enlarge
Closest thing to a holodeck yet. Official video for 'Sweater' by Belgian band Willow.
Can you see what word is hidden behind the Optical spy sign? Click on the optical to reveal the word.
Ignoring the door knob, how many circles are on the Optical Spy office door? If you stare at the door sign they should soon appear.
OK this is not easy question in fact it doesn't really have a correct answer. Well, if it does we don't know it and we designed it! Still it falls into the category of unusual, which we like a lot.
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