Every Sunday afternoon teams of costumed men gather in a historic square in Tarragona to assemble an unusual type of edifice ranging up to ten floors in height. But it’s not made of bricks and mortar; instead, its only building blocks are the participants themselves. The construction method is basic: one group stands on another’s shoulders, a third group climbs up to perch on the second’s shoulders, and so on, to form tier upon tier. Their finale is to pass a small boy from person to person until he is held aloft by the men at the pinnacle. As the structure rises, the crowd surges forward to physically support the builders who, body on body, continuously shift, balance a