Human Towers. An incredible tradition in Catalonia Region

In Catalonia Region (Northeast of Spain) there is a tradition that consists in forming human towers. It is named "Castells" and in Catalan language means "castles". 
It is a breathtaking performance, and it seems very difficult to achieve. 
Sometimes people fall down but most of the times they manage to "build" the tower and then they go down quickly. 
It is normal to see lots of different people watching this performance and crying. 
It could happen to us!

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