More than 20 people, including small children, have created a human tower among the crowds visiting the attack site on Barcelona’s Las Ramblas promenade in homage to the victims.
The performance Saturday was greeted by strong applause when a young child with a protective helmet on climbed over his colleagues to reach the top of the multi-level tower.
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Building human towers, or castells, are a very popular cultural event in many town festivals in Catalonia and date back to the 18th century.
Teams compete to build the tallest and most complex towers. A castell is considered successful when it is built and taken apart without anyone falling.