A nun looks on as workers erect a Christmas tree in St. Peter’s Square at the Vatican

A nun looks on as workers erect a Christmas tree in St. Peter’s Square at the Vatican

A nun looks on as workers erect a Christmas tree in St. Peter’s Square at the Vatican December 4, 2014. The 70-year-old Christmas tree was donated by the southern Italian region of Calabria. REUTERS/Max Rossi (VATICAN – Tags: RELIGION SOCIETY)