Migrants crowd an inflatable dinghy as members of the Italian coast guard approach them off the Libyan coast in the Mediterranean Sea on April 22. Alessandro Di Meo/AP hide caption

itoggle caption Alessandro Di Meo/AP

Pope Francis talks with a delegation of the Leadership Conference of Women Religious during an audience in the pontiff's studio at the Vatican on Thursday. The Vatican announced the unexpected conclusion of a controversial overhaul of the main umbrella group of U.S. nuns. L'Osservatore Romano/AP hide caption

itoggle caption L'Osservatore Romano/AP

Pope Francis (left) is greeted by the head of Armenia's Orthodox Church, Karekin II, in St. Peter's Basilica at the Vatican. The two met during an Armenian-Rite Mass. Gregorio Borgia/AP hide caption

itoggle caption Gregorio Borgia/AP

The Sts. Peter and Paul Basilica is in Rome's EUR district. The area has seen a rise in prostitution, and authorities have approved plans for a red light zone where prostitution will be officially tolerated in certain areas. While much of the community appears to support the move, Catholic groups are among those opposed, saying it legitimizes the exploitation of women. Filippo Monteforte/AFP/Getty Images hide caption

itoggle caption Filippo Monteforte/AFP/Getty Images

Pope Francis arrives for a special audience with the members of the UCIIM Catholic union of Italian secondary school teachers, in the Pope Paul VI hall, at the Vatican on Saturday. L'Osservatore Romano via AP hide caption

itoggle caption L'Osservatore Romano via AP

Italian architect Renzo Piano talks to journalists in Paris in 2014. Eric Feferberg/AFP/Getty Images hide caption

itoggle caption Eric Feferberg/AFP/Getty Images