Hundreds of thousands of Roman Catholic pilgrims from around the world descended on Fátima, Portugal, this weekend to attend the canonization ceremony of two shepherd children who said they witnessed an apparition of the Virgin Mary a century ago.

Many of the faithful spent Friday night sleeping outdoors, near where the children, Jacinta and Francisco Marto, are buried, and where Pope Francis said Mass.

Four of the pilgrims explain what motivated them to make the trip.