The 5th- and 6th-century mosaics of Ravenna, Italy, are such important international treasures that some of the world's best restoration artists have devoted themselves to their preservation.
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New mini-documentary: "Painting for Eternity"
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The 5th- and 6th-century mosaics of Ravenna, Italy, are such important international treasures that some of the world's best restoration artists have devoted themselves to their preservation.