Siena's Palio Horse Race

SIENA, ITALY - AUGUST 15: (RESTRICTED TO EDITORIAL USE - NO MARKETING NO ADVERTISING CAMPAIGNS) Horsemen prepare for the start of the main rehearsal of the Palio at the Piazza del Campo on August 15, 2013 in Siena.The Palio races in Siena, in which riders representing city districts compete, and takes place twice a year in the summer in a tradition that dates back to 1656. (Photo by Chris Jablinski/Getty Images)