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The annual Christmas market at Gendarmenmarkt stands illuminated in the city center on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)

Heart-shaped biscuits on sale at the Christmas market on its opening day on November 26, 2012 in Frankfurt, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Hannelore Foerster/Getty Images)

Performers on stilts walk among visitors at the annual Christmas market at Gendarmenmarkt on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)

Visitors crowd a mulled wine stand at the annual Christmas market at Gendarmenmarkt on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine (Gluehwein), Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)

Booths offer traditional Thuringian handcrafts and sweets and a big Ferris wheel stand at the Christmas Fair during heavy rain in front of the Mariendom (Cathedral of Mary), center left, and St. Severi's Church, right, in Erfurt, central Germany, Wednesday, Nov. 28, 2012. The Erfurt Christmas Market is one of the most beautiful Christmas Markets in Germany. The square is decorated with a huge, candle-lit Christmas tree and a large, hand-carved nativity scene. (AP Photo/Jens Meyer)

Visitors look at illuminated Christmas starts for sale at the annual Christmas market at Gendarmenmarkt on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine (Gluehwein), Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)

Visitors look at Christmas decorations for sale at the Kaethe Wohlfahrt stand at the annual Christmas market at Gendarmenmarkt on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)

Visitors skate on an ice rink at the annual Christmas market at Alexanderplatz two days after the market opened on November 28, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine (Gluehwein), Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them are opening across Germany this week. (Photo by Sean Gallup/Getty Images)

People ride a carousel at the annual Christmas market in the city center on its opening day on November 26, 2012 in Frankfurt, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Hannelore Foerster/Getty Images)

The annual Christmas market at Gendarmenmarkt stands illuminated in the city center on its opening day on November 26, 2012 in Berlin, Germany. Christmas markets, with their stalls selling mulled wine, Christmas tree decorations and other delights, are an integral part of German Christmas tradition, and many of them opened across Germany today. (Photo by Sean Gallup/Getty Images)