NEWSPhotos: Christmas marketsFILE - In this Dec. 8, 2016 photo people enjoy a stroll at the traditional Christmas market in Frankfurt, Germany. (AP Photo/Michael Probst, file)Michael Probst, APIn this Dec. 8, 2016 photo people enjoy Gluehwein (mulled wine) at a christmas market in the center of Muenster, Germany. (AP Photo/Martin Meissner)Martin Meissner, APFILE - In this Nov. 28, 2016 file photo taken with a long time exposure people walk along the Christmas Fair in front of the Mariendom (Cathedral of Mary) and St. Severi's Church in Erfurt, central Germany. (AP Photo/Jens Meyer, file)Jens Meyer, APFILE - In this Dec. 8, 2016 file photo Christmas stars for sale are illuminated at a vendor's stall on the christmas market at the Charlottenburg Palace in Berlin, Germany. (AP Photo/Markus Schreiber, file)Markus Schreiber, APFILE - In this Dec. 8, 2016 file photo Christmas decoration on sale at the Christmas market near the 'Marienplatz' square in Munich, Germany. (AP Photo/Matthias Schrader, file)Matthias Schrader, APFILE - In this Nov. 30, 2016 photo a women walks in front of a Christmas star is mirrored in a puddle, in central Berlin. (AP Photo/Markus Schreiber, file)Markus Schreiber, APFILE - In this Nov. 28, 2016 file photo a girl rides a horse on a merry-go-round on the Christmas market in Frankfurt, Germany. (AP Photo/Michael Probst, file)Michael Probst, APFILE - In this Dec. 7, 2016 file photo stars illuminate the top of tents of the Christmas market at the Gendarmen Markt square in Berlin. (AP Photo/Markus Schreiber, file)Markus Schreiber, APFILE - In this Dec. 1, 2016 photo young people stand in front of a fountain that is decorated with Christmas lights in downtown Frankfurt, Germany. (AP Photo/Michael Probst, file)Michael Probst, APFILE - In this Nov. 28, 2016 file photo people walk in front of a stand decorated with Christmas stars during the Christmas Fair in Erfurt, central Germany. (AP Photo/Jens Meyer)Jens Meyer, APFILE - In this Dec. 8, 2016 file photo visitors walk in front of the illuminated Christmas tree near the Christmas market at the Potsdamer Platz square in Berlin, Germany. (AP Photo/Markus Schreiber, file)Markus Schreiber, APIn this Dec. 8, 2016 photo people walk over the Christmas market in the center of Muenster, Germany. (AP Photo/Martin Meissner)Martin Meissner, APFILE - In this Dec. 8, 2016 photo Christmas stars are sold at a traditional Christmas market in the center of Muenster, Germany. (AP Photo/Martin Meissner, file)Martin Meissner, AP