Conservators here at the Phillips Collection used infrared imaging to virtually peel back the paint of the artist's famous 1901 painting "The Blue Room"; underneath, they discovered a portrait of a man in a bow tie, resting his head on his arm. Live Science visited the collection for a behind-the-scenes look at how the discovery was made.
The painting, which Picasso created in Paris early in his career at the start of his "blue period," has been in the Phillips Collection since 1929, but is currently on tour in South Korea through early 2015. [Photos: The Secret Paintings of Angkor Wat]