Pope Leo XIV celebrated a Mass at the Sagrada Familia in Barcelona to mark the centenary of the death of Antoni Gaudi.During the ceremony attended by King Felipe VI and Queen Letizia, the Pope blessed the newly completed Tower of Jesus Christ.This architectural achievement establishes the basilica as the tallest church in the world, standing at 172.5 meters high.The visit also highlighted the Pope's calls for international cooperation regarding migration challenges and his outreach to prisoners.