BARCELONAâ??—â??It is pouring rain, and a cold wind blows across the Plaça de Catalunya.
Most would say it is a less-than-ideal time for a walking tour through a city noted for its popularity with tourists and for beautiful attractions like the ornate Sagrada Família cathedral.
But the tour guide is Nick Lloyd, a man who moves like a bolt of lightning and focuses intently on his mission.
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