Doodlewatch

A castell is a human tower traditionally built during festivals in many places in Catalonia, Spain. At these festivals, several colles castelleres (teams) meet and try to build the most impressive towers they can.

This tradition originated in the southern part of Catalonia at the end of the 18th century. More specifically in Valls, near the city of Tarragona. The tradition later spread to other regions of Catalonia and even Majorca, and has become very popular. However, the best and most skilled castellers are still found near Tarragona.

• http://en.wikipedia.org/wiki/Castellers