The Rockefeller Center Christmas Tree is seen during its lighting ceremony in New York November 30, 2011. The event is the 79th lighting of the tree, which measures 74 feet (23 meters) tall and 46 feet (14 meters) wide and weights 10 tons. It is a 75 year-old Norway Spruce adorned with approximately 30,000 Christmas lights. [Photo/Agencies]

New York City Mayor Michael Bloomberg (2nd L) and Tishman Speyer co-Chief Executives Jerry I. Speyer (2nd R) and Rob Speyer (R) turn on the Christmas lights on the Rockefeller Center Christmas Tree in New York November 30, 2011. [Photo/Agencies]