Camilla (L), Duchess of Cornwall and Britain's Prince Charles (R) visit the Museum of Paste with Hidalgo state Governor Jose Francisco Olvera (L, rear) and his wife Maria Guadalupe Romero in Pachuca, in the Mexican state of Hidalgo, November 2, 2014. The "Paste" is Cornish Pasty brought to Mexico by miners from Cornwall in Great Britain who used to work in the mines of Pachuca around the 1820s. Charles and Camilla are in Mexico on a four-day official visit. REUTERS/Jose Mendez/Pool (MEXICO - Tags: POLITICS ENTERTAINMENT ROYALS TPX IMAGES OF THE DAY)