People stand next to Christmas decorations in Beijing's Sanlitun area, China December 19, 2017. (Photo by Jason Lee/Reuters)





Tourists walk past the Millennium Park Christmas tree in a timed exposure with a zoom lens Thursday, December 14, 2017, in Chicago. (Photo by Charles Rex Arbogast/AP Photo)





People walk along a Christmas market on the Red Square in Moscow on December 16, 2017. (Photo by Vasily Maximov/AFP Photo)





A woman protects herself from the snow with an umbrella as she walks under the Christmas decorations set on a street in central Moscow on December 18, 2017. (Photo by Mladen Antonov/AFP Photo)





People are silhouetted while walking through rows of lanterns during the opening night of the Vancouver Chinese Lantern Festival at the Pacific National Exhibition, in Vancouver, British Columbia, on Friday, December 15, 2017. The festival features hundreds of illuminated lanterns and is open until Jan. 21, 2018. (Photo by Darryl Dyck/The Canadian Press via AP Photo)





Christmas decorations are built up at the main square of Nagyvarad (Oradea), Romania, 12 December 2017. (Photo by Zsolt Czegledi/EPA/EFE)





Visitors walk in front of an illuminated replica of The Kremlin and St. Basil Cathedral built for the forthcoming holiday season outside a shopping mall in Moscow on November 24, 2017. (Photo by Mladen Antonov/AFP Photo)





From left are Chase McCann, 7, and his brother Blake, 5, of Northern Cambria, Pa., getting a close look at the musical Christmas tree in Central Park, Johnstown, Pa., Friday, December 8, 2017. (Photo by John Rucosky/Tribune-Democrat via AP Photo)





A general view of the Christmas market on the square in front of the world famous gothic cathedral in Cologne, Germany, November 28, 2017. (Photo by Thilo Schmuelgen/Reuters)





People use mobile phones to take pictures as Christmas lights are turned on to mark the start of the Christmas season at Marques de Larios street in downtown Malaga, southern Spain, November 24, 2017. (Photo by Jon Nazca/Reuters)





In this November 16, 2017 photo, The Lilly House at Newfields is part of the Winterlights holiday light display on the museum's grounds in Indianapolis. The display on the lawn of the home is synchronized to music from the Nutcracker. (Photo by Michael Conroy/AP Photo)





People watch fireworks go off near a giant Christmas tree, set in front of Muhammad al-Amin Mosque during Christmas celebrations at Martyr's Square in Beirut, Lebanon, Sunday, December 10, 2017. The fireworks mark the turning on of the Christmas tree lights.(Photo by Bilal Hussein/AP Photo)





Christmas lights illuminate 'Am Graben' shopping street in Vienna, Austria, 25 November 2017. Merchandisers started off the Christmas season this week in Austria. (Photo by Lisi Niesner/EPA/EFE)





People are seen on a pier in front of a giant illuminated Christmas ball in Larnaca, Cyprus December 19, 2017. (Photo by Yiannis Kourtoglou/Reuters)





Shoppers walk at the Christmas market at Szent Istvan square in downtown Budapest, Hungary, 24 November 2017. (Photo by Balazs Mohai/EPA/EFE)





People look at a Christmas tree decorated with colourful lights at a residential compound in Beijing on December 8, 2017. (Photo by Nicolas Asfouri/AFP Photo)





A carousel is pictured at Alexanderplatz square in Berlin, Germany, November 28, 2017. (Photo by Hannibal Hanschke/Reuters)





A fisheye lens image shows a couple seated inside a Christmas-themed light sculpture at the Gardens by the Bay in Singapore, 01 December 2017. The fourth edition of Christmas Wonderland, Singapore's biggest Christmas fair, will run from 01 to 26 December 2017 at the Gardens by the Bay. (Photo by Wallace Woon/EPA/EFE)





Visitors walk in front of the illuminated Christmas tree in the Old city in Kaunas, Lithuania, Thursday, December 7, 2017. Kaunas is the second largest city in Lithuania. (Photo by Mindaugas Kulbis/AP Photo)





A man walks past Christmas decorations in Maghdouche village near Sidon, Lebanon on December 5, 2017. (Photo by Ali Hashisho/Reuters)