Madrid world youth day 2011 08 17 11

Jordanian flags are waved as Catholic pilgrims from Palestine, Israel, Jordan and Irak attend a mass in Arabic in a church of La Ciudad de los Angeles (City of Angels), a neighborhood of Madrid on August 17, 2011 on the eve of Pope Benedict XVI's arrival to join the final four days of the celebrations of the World Youth Day. An estimated one million young Roman Catholics or more are celebrating World Youth Day in and around Madrid from August 16-21 in a rock-festival style atmosphere.