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

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

Oprah Winfrey gave $12 million Tuesday to help build the Smithsonian's new National Museum of African American History and Culture, seen here in a scale model (lower center). The facility is expected to open in 2015. Allison Keyes/NPR hide caption

itoggle caption Allison Keyes/NPR

One of the highlights of the new China Art Palace in Shanghai is a giant digital rendering of a famous ancient scroll, "Along the River During Qingming Festival," which includes figures that walk and talk. The work was first presented at the 2010 World Expo in Shanghai. Frank Langfitt/NPR hide caption

itoggle caption Frank Langfitt/NPR