The key event will be the big outdoor mass celebrated by the pope on Sunday and German organizers are still hoping one million young people will attend.

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Part of an outdoor art installation called Levitated Mass, this unlikely local celebrity has unified Southern California, from its humble beginnings in a rock quarry to its final placement at the museum, with a much-buzzed-about unveiling in June.

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Part Mass, part-outdoor concert, the ceremonies began with a medley of Cuban folk songs from around Santiago before the pontiff entered the crowd in his Popemobile.

WSJ: In Cuba, Pope Urges New Cooperation

Will adventure racing achieve the mass popularity of running, mountain biking and other outdoor sports?

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