The castell is built in two phases. First, the pinya— the base of the tower — is formed. People forming higher levels of the tower move to a position from which they can easily get to their places in the tower. This is done slowly and carefully, and as subsequent base levels are completed the castellers in the pinya determine if their base is solid enough for construction to continue. Then, when the signal to proceed is given, bands begin to play the traditional Toc de Castells music as a hush comes over spectators of the event. The upper layers of the tower are built as quickly as possible in order to put minimal strain on the lower castellers, who bear most of the weight of the castell. The disassembly of the castell, done amidst the cheering of the crowd, is often the most treacherous stage of the event.
The castell is built in two phases. First, the pinya— the. base of the tower — is formed. People forming higher levels of the tower move to a position from which they can easily get to their places in the tower. This is done slowly and carefully, and as subsequent base levels are completed the castellers in the pinya determine if their base is solid enough for construction to continue. Then, when the signal to proceed is given, bands begin to play the traditional Toc de Castells music as a hush comes over spectators of the event The upper layers of the tower are built as quickly as possible in order to put minimal strain on the lower castellers, who bear most of the weight of the castell. The disassembly of the castell, done amidst the cheering of the crowd, is often the most treacherous stage of the event.