Pope Francis on Monday began a 12-day, four-country, two-continent odyssey; with stops in Indonesia, Papua New Guinea, Timor-Leste and Singapore.

Pope Francis, 87, is set to embark on the longest, and perhaps most challenging trip of his papacy. The pontiff, who will visit Indonesia, Papua New Guinea, East Timor and Singapore, will clock 32,814 kilometres by air and headline over 40 events.