A "muixeranga" is a human tower, and it requires a lot of strength, balance and absolute trust in your team mates. This particular tower must have been particularly difficult to build, so people from the purple team didn't hesitate to come and help the orange one. Nice of them!
The little kid on top of the tower is called "l'angelet" (the little angel) because he/she touches the sky. In this picture, she is standing on one leg to show that they have achieved perfect balance.
