FILE ** In this Feb. 15, 2007 file photo tourists ride a double decker Turibus passed the Angel of Independence in Mexico City. With just a few pesos, preferably hidden deep inside one's clothing in case of mugging, visitors can view world-renowned art inside centuries-old buildings, wander through Aztec ruins in the heart of the city, and sip tequila at rooftop bars where DJs spin the latest international beats.
(AP Photo/Gregory Bull, File)