Aureum Opus is an exhibit of five centuries of illustrated books that the Barcelona Association of Bibliophiles (to which Frederic Marès belonged) and the Frederic Marès Museum, organised as a tribute to Marès.

The exhibition is an invitation to take a journey through the history of illustration in Catalonia, and it is a declaration of a love for books, a love very deeply felt in our country since the nineteenth century, as a result of the Catalan movement, the Renaixença.

New technologies that were applied, thanks to the collaboration of the Humanities and Philology Studies of the Open University of Catalonia, have allowed us to plunge onto the pages of books, virtually, as well as to enter the workshops that have printed and illustrated books throughout the centuries.