El Botafumeiro
Well, when I had been in S.Compostela I didn't see Botafumeiro in action. I just saw it in television and it is amazing.
Botafumeiro is a huge incense holder that is moved back and forth on ropes by some men. It crosses the cathedral and throws incense over the people's heads.
They tell that it was used in the old times because of the pilgrims smell and the incense takes the bad smell away.
Botafumeiro is in the cathedral of Santiago and take action in the day of the celebration of the Saint and others holy days.

Tourist Office (Santiago de Compostela (Spain)
Praza das Praterías (Santiago de C. (Spain)
Rúa das Orfas (Santiago de C., Spain)
Statue of St Francis of Assissi