Pope Leo XIV, the first US pontiff, made his debut tour of St Peter's Square on Sunday in a popemobile, greeting tens of thousands of pilgrims and well-wishers ahead of his inauguration mass.
Chicago-born Robert Francis Prevost, who became head of the world's 1.4 billion Catholics on May 8, stood in the white vehicle as it drove through cheering crowds, smiling, waving and making the sign of the cross.
