This list includes host city locations for both:
(1) World Youth Day
(2) "the recurring "World Meeting of Families"
Ever since St.John Paul II prioritized more events emphasizing youth fellowship, the recurring World Youth Day, a "Catholic Coachella" as it may be casually described has become a movement for organizing more autonomous youth led activities in local dioceses throughout the world.
Additionally the more recent World Meeting of Families has been an impetus for Catholic Christian attendees to organize travel plans that advance fellowship with other followers of the faith beyond their borders.