Sunday’s Mass falls on the Catholic Corpus Domini feast day, which often features processions of faithful through towns and cities led by a priest carrying the Eucharist. In Spain as in other predominantly Catholic countries, the processions often feature elaborate floral carpets arranged along the route. Leo, who arrived in Spain on Saturday at the start of his weeklong visit, has been keen to highlight the long tradition of Catholic devotion here to encourage especially young generations to find their faith.