Images include paintings, photographs, models, sculptures as well as fossils, clothes, weaponry and ancient maps.

BBC: Exhibition marks custodian's death at Newark Castle

Often equipped only with head lamps and homemade maps, they explore the tunnels and ancient rooms, sometimes staying underground for days at a time.

CNN: Loving life in Paris' Empire of the Dead

The National Library of China (NLC) contributed manuscripts, maps, books, and rubbings of steles and oracle bones that span the range of Chinese history from ancient to modern times.

UNESCO: Communication and Information