Images of the week: Bangkok, Sofia, Las Vegas // Images of the week: Bangkok, Sofia, Las Vegas (© 2012 RELAXNEWS)

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Images of the week: Bangkok, Sofia, Las Vegas

People look at graffiti alluding to the FIFA 2014 World Cup, on the wall of Maracana subway station, in Rio de Janeiro, on November 6, 2012. Metro Rio asked grafitti artists to paint Rio's tube line 2.