The Spanish tradition of building castells, or human towers, is seeing a revival. Watch the flesh and blood towers rise, and sometimes fall. WSJ's Matt Moffett reports from Spain's Catalonia region.
VILA-RODONA, Spain—Jesús Zazo stood in the ancient plaza in a throng of other pink-clad members of the Colla Vella dels Xiquets club. He had everything riding on this grudge match in the Catalonia region's signature competitive event: human-tower building.
Mr. Zazo scrummed together with a couple of hundred other club members who formed the circular base of the tower, or castell. Three broad-backed men clambered atop this flesh-and-blood platform, wrapping arms in a huddle. Tier by tier, the tower grew. At seven levels, Mr. Zazo's tiny daughter, Sarai, her face almost hidden by her helmet, began shimmying up. Halfway to the top, the 9-year-old seemed about to lose her footing. But she recovered, using the waist sashes worn by other club members like rungs on a ladder, and darted to the summit.

Castells Are Rising in Catalonia

Colla Vella built human towers last month in front of Manresa's city hall, drawing crowds. Edu Bayer for The Wall Street Journal
Things went less well for rival club, Colla Joves Xiquets. When its youthful tower topper reached the peak, she gazed down and panicked. The structure began to buckle and then collapsed in a sprawling heap.
The vertigo-inducing tradition of building human towers, which has survived civil war, depression and dictatorship over two tumultuous centuries, is thriving as a haven of inclusiveness in a new era of upheaval in Catalonia.
"Castells are rising all over Catalonia and the clubs are full of all kinds of people who want to prove they have what it takes to form part of a tower," said Salvador Domingo, a fourth-generation Colla Vella member who was baptized in the club's shirt. Colla Vella incorporates characters as diverse as a laid-off ambulance technician, a Colombian ballerina and an 85-year-old great-grandfather, as well as plucky little Sarai and her dad.
Colla Vella dels Xiquets club members
This year Catalan clubs have made just over 10,000 castells, compared to 5,700 five years ago, according to the governing Coordinator of Catalan Castell Clubs. There are some 60 Catalan tower-building clubs, more than ever before, and a score of new ones are being chartered. Twice this year, a colla—or club—mounted and dismounted a 10-tier castell, a feat achieved only twice in the previous 200 years.
Greater safety-consciousness is contributing to the castell building boom. Helmets are now required for youths at the top tiers, and tower clubs practice several times a week to cut down on accidents. (There have been five recorded castell-making deaths over the past 200 years, according to the coordinator of the clubs.)
There are many variations of castells that differ on how many levels they have and how many people they have per level. The groups perform at local fairs and at holiday events in towns throughout the region.
Tower building had been growing steadily since the 1980s, but it has reached new heights since the collapse of Spain's economy in 2008. Tower clubs have become refuges for unemployed young people like Aleix Magriña, 26, who recently lost his job with an ambulance service. Colla Vella provides him something to do with his free time and contacts with odd jobs.
The economic crisis has also fired up a vigorous independence movement in Catalonia, and castells are more cherished than ever as symbols of this northern region's cultural distinctiveness from the rest of Spain.
Colla Vella is one of the oldest clubs, with its own housing development and section of the cemetery set aside for members. The Colla Vella versus Colla Joves rivalry is to Castell-building what the New York Yankees-Boston Red Sox rivalry is to baseball—except for one thing: The tower antagonists come from the same town, Valls, and are thus reminded of their mutual dislike on a daily basis at the bakery or carwash.
The week before the event in Vila-Rodona, Colla Vella members had come out for another competition with Colla Joves only to find a crude insult about them spray-painted on the pavement. Then, when a 7-year-old boy was climbing to the top of what would have been a record-tying 10-story castell for Colla Vella, Colla Joves engaged in some further gamesmanship, witnesses say. "It's not stable!" Colla Joves members cried, according to people who were there. "Get off now!" The boy became rattled and climbed down from the seventh tier, frustrating Colla Vella's bid to make history.
Josep Fernández, Joves's president, apologized for the message on the pavement, and said that he didn't hear any of the trash talk, but that he wouldn't have approved of it.
Castells emerged in Catalonia during the late 18th century as a display of brawn, nerve and teamwork for rural males. The human towers waned in the 1930s amid a depression, a bloody civil war and the start of the long dictatorship of Francisco Franco. Some of El Generalísimo's minions ordered children to make the fascist salute when they topped a castell.
Castells began their comeback after Spain returned to democracy in the late 1970s, gradually drawing more people from the urban middle class, immigrants and eventually women. "You need a lot of bodies and a lot of different types of bodies to make castells, so everyone is welcome," says Alfonso González, a leader of the Nens del Vendrell colla.
It happens that the child who tops the castell for Vendrell is the daughter of a Moroccan immigrant. That made for an incongruous scene not long ago when, after one especially riveting performance, the immigrant girl was warmly embraced by a politician from a far-right party with a virulently xenophobic platform. "I'm not sure if he didn't realize she was an immigrant, or if he was just carried away by the excitement," said Mr. González.
Girls are generally preferred to boys at the top levels, because they are not only lighter and more agile, but also considered more fearless. Clareth Veronica Vasquez, a 17-year-old Colombian immigrant, was recruited by Colla Vella from a ballet studio because of her physical grace and coolheadedness. Sarai Zazo's older brother isn't interested in scaling castells, her father says, but she has topped scores of them since starting at four years old.
In a Colla Vella event in November, the boy who had climbed down from the failed 10-story castell redeemed himself when he scrambled up another tower without a hitch.
The castell-climbing comeback didn't surprise 85-year-old Magi Güell, who has worked his way down from top to the base over decades at Colla Vella. "In Catalonia, there's always another castell to be built, and always a place for everyone there," he said.