We're in the midst of Pope Francis' visit to the U.S. The historic event has been making news everywhere. Since Tuesday, he has traveled to Washington, D.C., and New York. His next stop? Philadelphia. Close to 1 million people are expected to head to the area for the 8th World Meeting of Families. The pope will host a Papal Mass at the Cathedral Basilica of Sts. Peter and Paul upon arrival and attend the World Meeting of Families later that evening.