This 600-year-old painting is one of the most mysterious in history.

This 600-year-old painting is one of the most mysterious in history. That mirror at the back is just 3 inches wide — yet it reflects the entire room in immense detail.

Look closer at it and you'll realize nothing is as it seems…

Jan van Eyck's masterpiece is an ordinary portrait: Italian merchant Giovanni Arnolfini and his wife, Costanza. Copied and pasted