A necklace of Saint Januarius, in gold, silver and precious stones, is displayed in Rome. The riches are from a treasure trove in Naples that is said to be worth more than the British crown jewels. Gabriel Buoys/AFP/Getty Images hide caption

itoggle caption Gabriel Buoys/AFP/Getty Images

Pablo Picasso drew L'Homme au Gibus, or Man With Opera Hat, in 1914. (c) Succession Picasso 2013 hide caption

itoggle caption (c) Succession Picasso 2013

Banksy's "Sirens of the Lambs" started its tour of New York City in — naturally — the Meatpacking District. BanksyNY/Youtube hide caption

itoggle caption BanksyNY/Youtube

Cosmo Wenman generated this 3-D model of the Ares Borghese, based on hundreds of photos, from the Basel Sculpture Hall. Wenman publishes the scans online, so that anyone can use them to 3-D print a replica of the masterpiece. Courtesy of Cosmo Wenman hide caption

itoggle caption Courtesy of Cosmo Wenman

Carrie Mae Weems, a 2013 MacArthur Fellow. John D. and Catherine T. MacArthur Foundation hide caption

itoggle caption John D. and Catherine T. MacArthur Foundation

Earth's Skin, 2007.Aluminum and copper wire, 177 x 394 in. (449.6 x 1000.8 cm). Joe Levack/Courtesy of artist, Jack Shainman Gallery, New York, the Akron Art Museum hide caption

itoggle caption Joe Levack/Courtesy of artist, Jack Shainman Gallery, New York, the Akron Art Museum

Alex Ruger, director of the Van Gogh Museum in Amsterdam, at the unveiling Monday of Vincent Van Gogh's Sunset at Montmajour. Olaf Kraak /AFP/Getty Images hide caption

itoggle caption Olaf Kraak /AFP/Getty Images

Turrell's 2013 LED work Breathing Light is currently on display at LACMA. Florian Holzherr/LACMA hide caption

itoggle caption Florian Holzherr/LACMA

The Angolan exhibit consists of tall stacks of large photographic posters by artist Edson Chagas. The country, which is exhibiting at Venice for the first time, won the Golden Lion award for best national pavilion. Courtesy of www.beyondentrophy.com hide caption

itoggle caption Courtesy of www.beyondentrophy.com