Waldemar Januszczak uncovers the secret meanings hidden within some of the world's most famous paintings, beginning with Leonardo da Vinci's Mona Lisa.

Waldemar Januszczak uncovers the secret meanings hidden within Thomas Gainsborough's oil on canvas portrait Mr and Mrs Andrews.

Waldemar Januszczak takes a look at the The Birth of Venus, by Sandro Botticelli, hoping to uncover mysteries as he dives deeper into the meanings behind the painting.