The Chavo del Ocho balloon makes its way along the streets during an annual Christmas parade at Santiago town in Chile, December 13, 2015. (Photo by Pablo Sanhueza/Reuters)
A young Chinese girl dressed in Christmas costume, hugs a pedestrian on a street to celebrate Christmas in Nanjing city, east China's Jiangsu province, 23 December 2015. (Photo by Imaginechina/Splash News)
Father Christmas arriving at the Arding and Hobbs store in Clapham Junction, London, 2nd November 1926. (Photo by H. F. Davis/Topical Press Agency/Getty Images)
A girl takes a nap during a Christmas eve mass at a Catholic church on the outskirts of Taiyuan, North China's Shanxi province, December 24, 2016. (Photo by Jason Lee/Reuters)
Cathryn Shrimpton, 4, prepares to play the Angle Gabriel during a traditional Christmas Nativity on December 18, 2011, at St Mary's Church, Myton Village, England. In schools and churches around the country children busy preparing and performing in the telling of the traditional nativity story. (Photo by Bethany Clarke/Getty Images)
Italian artist Guiliano Mauri is the father of this spectacular Cattedrale Vegetale (Tree Cathedral), a unique building created out of rows of real living trees. Located at the foot of Mount Arera on the outskirts of Bergamo in Northern Italy, the cathedral is an ever-changing building that will be fully formed over the course of decades – when the trees outgrow their supporting columns and become a piece of natural architecture.