A boy takes part in a football practice next to the historic fortress walls of Cartagena, Colombia, on September 8, 2014. The city of Cartagena celebrated on Monday, the 400th anniversary of the beginning of the construction of the fortress walls listed by UNESCO in 1984 as a World Heritage site.  AFP PHOTO / Joaquin Sarmiento        (Photo credit should read Joaquin SARMIENTO/AFP/Getty Images)