Europeana

Europeana is a single access point to millions of books, paintings, films, museum objects and archival records that have been digitised throughout Europe. It is an authoritative source of information coming from European cultural and scientific institutions. On September 12, 2012 Europeana opened "up data about all 20 million of the items it holds under the CC0 rights waiver. This means that anyone can reuse the data for any purpose - whether using it to build applications to bring cultural content to new audiences in new ways, or analysing it to improve our understanding of Europe's cultural and intellectual history." For more info see: The Guardian article.