Where I was born, in Catalonia, there is this tradition called 'els castellers' (lit. castle men –castells=castle, -ers=ending when writing someone's vocation) where the aim is to construct different kind of towers made of people. Weird yeah, but its origins are from 18th century. Nowadays there are a lot of groups from different parts of Catalonia practicing this tradition. (http://en.wikipedia.org/wiki/Castell" [Broken]) Of course, the bigger the tower is, the better. But there are different kinds of difficulty. There's 'la folre' and 'les manilles' where both are different names to call basis of a tower (les manilles always go in the third level of the tower). And then the tower can be constructed of 1, 2, 3, 4 (even 5) people per level. The maximum level it has been reached was 10. Yeah, a 10-tower level made up of people. This is the video of the first time this tower was reached: Sit back and enjoy! It's always amusing to see this tradition for the first time, even if it's not in live. P.S: I fail at linking youtube vids: sorry... tried the embed thing but didn't work.