Grand Tour of the Self

BARCELONA, Spain — From the castle grounds atop Montjuic, you can see the warrens of the old city running into the Dr. Seussian spires of the new one that sprouted from Antoni Gaudí’s imagination. Below or up high, Barcelona is a tapas menu of urban surprise.But a new breed of visitor bouncing from one sight to another in the warm November sunshine barely pauses for a taste.