Hulton Archive/Getty Images Storing the art in the quarry during World War ... explorer Will Millard as part of his BBC Wales series, Hidden Wales. Mr Millard described it as one of the most ...

Pieter Bruegel the Elder's 16th-century painting 'The Fight Between Carnival and Lent' contains hidden playing cards ... toward the bottom left of the artwork. The artwork portrays a lively ...

An artwork at the Temple of Esna in Egypt with the color visible. Restoration work at the temple has revealing long-hidden colorful details in its decorations. An artwork at the Temple of Esna in ...