A man in Aztec warrior costume dances in front of the Pyramid of Kukulkan at Chichen Itza in Yucatan state, Dec 20, 2012. The archaeological site of Chichen Itza is expected to receive approximately 30,000 people on 21 Dec, almost twice that in the spring equinox on March 21, according to the Institute of Archaeology and History. [Photo/Agencies]

Students dressed in Santa Claus costumes pose as they wait to perform during Christmas celebrations at their school in the northern Indian city of Chandigarh Dec 20, 2012. [Photo/Agencies]