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Little voices fill St. Paul's Cathedral for Christmas

Toby Melville / Reuters

Choristers of St. Paul's Cathedral practice in the choir stalls at St. Paul's Cathedral in London on Monday, Dec. 12. The 30 choristers and eight probationers join twelve adult singers comprising the Vicars Choral to form the Cathedral Choir.

Cities across the world are decking the halls for the holidays. From New York to Paris to Berlin, see how folks are showcasing their festive seasonal displays in our slideshow.