World leaders and rank-and-file Catholic faithful have said farewell to Pope Francis in a funeral that highlighted his concern for people on the peripheries and reflected his wish to be remembered as a simple pastor.

Tens of thousands gathered around Vatican City for Pope Francis' funeral mass.

Pope Francis, the 266th pope of the Roman Catholic Church, will be mourned and buried at the Basilica of Saint Mary Major after dying one week ago at 88 years old.