Casteller
In the city of Tarragona, Spain, castellers gather every two years to see who can build the highest, most intricate human castles. This uniquely Catalan tradition requires astonishing strength, finesse, and balance. Not to mention courage.
Absolutely beautiful, I love the colors! [Vimeo]
via boingboing
Feb 17, 2011
This happens in India too.. except they break a pot at the top.
For more info:http://en.wikipedia.org/wiki/Dahi_Handi#In_Maharashtra