His ascension to the papacy heralded many firsts.
Francis was the first Pope from the Americas or the Southern Hemisphere. Not since Syrian-born Gregory III died in 741 had there been a non-European Bishop of Rome.
He was also the first Jesuit to be elected to the throne of St Peter - Jesuits were historically looked on with suspicion by Rome.
His predecessor, Benedict XVI, was the first Pope to retire voluntarily in almost 600 years and for almost a decade the Vatican Gardens hosted two popes.