Members of the &quot;Colla Vella dels Xiquets de Valls&quot; human tower team form a &quot;castell&quot; (human tower) during the XXVI human towers, or &#039;castells&#039;, competetion in Tarragona on October 2, 2016. These human towers, built traditionally in festivals within Catalonia, gather several teams that attempt to build and dismantle a human tower structure. (LLUIS GENE/AFP/Getty Images)