Catalonia’s human towers! Castells, or human towers, are a Catalan tradition that dates back many centuries and they often reach over 12 metres high! Emeline Nsingi Nkosi watches as one local team attempts the climb... Castells are usually performed at festivals and public events throughout Catalonia. Due to the dangerous nature of the tradition years of practice and training go into each performance. Please don't try this at home! Catch our travels through this distinctive and fiercely proud re