Philadelphia, UNITED STATES
Women write prayer messages on ribbons outside the Cathedral Basilica of Saints Peter and Paul, as part...
Women write prayer messages on ribbons outside the Cathedral Basilica of Saints Peter and Paul, as part of an art installation called "Knotted Grotto" in Philadelphia, Pennsylvania, September 23, 2015. The events expected to draw the biggest crowds during Pope Francis' six-day visit to the U.S. all occur in Philadelphia, September 26-27. REUTERS/Mark Makela