Vivid Photos from Spain's 25th Colorful 'Human Tower' Competition

Vivid Photos from Spain's 25th Colorful 'Human Tower' Competition

The Tarragona Castells may be the most fascinating team sporting event in the world. 

The tradition of building human towers or "castells" in Spain dates back to the 18th century. According to the Associated Press, the tradition normally takes place during festivals in Catalonia, where colles, color-coded team with precise techniques compete to build the tallest and most complicated towers. In 2010, castells were declared one of humanity's Masterpieces of the Oral and Intangible Heritage of Humanity by UNESCO.

"The structure of the castells varies depending on their complexity," writes Associated Press photojournalist Emilio Morenatti, who traveled to the 25th Human Tower Competition in Tarragona, Spain. "A castell is considered completely successful when it is loaded and unloaded without falling apart."

These fantastic photos, taken by Morenatti and Getty, capture the unique, colorful beauty that is one of Spain's oldest sporting traditions.