In his first visit to Auschwitz in his capacity as leader of the Catholic Church, Pope Francis prayed and met with survivors during a five-day trip to Poland that included meetings with young Catholic pilgrims gathering in Krakow for World Youth Day, a global celebration of faith.

In a letter he wrote to a newspaper last week, 91-year-old Joseph Hirt admitted he had been lying for years about having been in Auschwitz, but clarified he was only trying to prevent the loss of truth about what happened during the Holocaust.

Museum staff at the former Auschwitz-Birkenau Nazi concentration camp in Poland placed mist showers at the entrance in an attempt to alleviate visitors' discomfort from the summer heat, but their goodwill was perceived by some as offensive.

A powerful message was sent to commemorate Holocaust Memorial Day. A video was posted of Israeli Air Force jets flying over Auschwitz.