"La Mercè is the "most important festival" of Barcelona (Catalonia, Spain). It has been an official city holiday since 1871, when the local government first organized a program of special activities to observe the Roman Catholic feast day of Our Lady of Mercy. (In Catalan, La Mare de Déu de la Mercè -- The Merciful Mother of God; in Spanish, La Virgen de la Merced -- The Virgin of Mercy.) Although the actual date of the holiday is September 24th, the festivities begin a few days before.
The year 1902 saw a new impetus to the celebrations, with parades containing the first appearance in Catalonia of paper mache "giants" (known asgegants i capgrossos in Catalan or gigantes y cabezudos in Spanish), the first Castell competition and the importation from the Emporda region of a dance that was spreading throughout Catalonia: the Sardana. The holiday has enjoyed immense local popularity ever since.
Among more recently introduced traditions are the annual Catalonian Wine Fair, a special "correfoc", a marathon race, and the particularly popular pyromusical, which is a spectacular display of synchronized fireworks, water fountains and music conducted at the base of Montjuic hill."
