The recent restoration of a portrait of Sir Walter Raleigh has revealed a secret: a hidden crescent moon over water, a symbol of the explorer's devotion to Queen Elizabeth I. The portrait is on display at the National Portrait Gallery in London until January 5, 2014. (photo)
Raleigh was the author of the Cynthia cycle of poems for Elizabeth in which he compared the queen to Cynthia, the goddess of the moon. Experts believe the moon in the painting refers to Elizabeth, while the water beneath it refers to Raleigh. The hidden reference was obscured by centuries of old paint.