From @Newsflare member 'nick'

The famous Castellers de Vilafranca have come from Spain to build a Castell in front of Tower Bridge, London in Potters Fields Park.

Castellers de Vilafranca are the world's best Human Towers team. http://en.wikipedia.org/wiki/Castellers_de_Vilafranca

More information: http://lisibo.com/2013/04/see-castellers-de-vilafranca-in-london-19-21st-april-2013/

http://www.newsflare.com/video/3376/entertainment-arts/castellers-de-vilafranca-build-a-castell-high-quality-version