CAMPECHE, MEXICO - NOVEMBER 04:  Prince Charles, Prince of Wales gestures as he visits Edzna Maya archaeological site on November 4, 2014 in Campeche, Mexico. The Royal Couple are on the second day of a four day visit to Mexico as part of a Royal tour to Colombia and Mexico. The Duchess was scheduled to visit the site today but had to pull out due to health reasons.  (Photo by Chris Jackson/Getty Images)