An optical illusion is a fascinating visual trick that plays with the way our brain and eyes work together. Sometimes, what we “see” isn't really what's “there,” and that's what makes optical ...

Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure. Optical illusions come in many forms, from horses and tigers to moving shapes and floating ships ...

The Achenbach Foundation for Graphic Arts boasts over 90,000 works on paper, from Old Masters to contemporary art, in genres spanning photography, printmaking, drawing and artists’ books ...

2.In 2014, scientists found a hidden portrait behind The Blue Room by Pablo Picasso. Art historians don't know who the portrait is of, but it wasn't uncommon for Picasso to reuse canvasses.