Photos: Building Human Towers in Spain

In Tarragona, Spain, more than 40 teams of “castellers” recently gathered for the city’s 29th biannual human-tower competition—working together to build the highest and most complex human towers (castells) possible. Winning teams reached as high as 10 tiers above the ground. Gathered here are some of the images of these amazing structures, and the effort involved in forming them.

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