The New Year's Eve countdown traditionally broadcast from Puerta del Sol takes place in Madrid.
Puerta del Sol is a major public square in central Madrid and one of Spain's best-known civic spaces. Its clock tower provides the twelve midnight chimes used for the Spanish grape-eating tradition. Television broadcasts show the clock and the square so people across Spain can synchronize their celebrations.
At each chime, participants try to eat one grape, creating the custom known as las doce uvas de la suerte. The grapes are associated with luck for the twelve months ahead. The chimes are preceded by warning sounds, so experienced viewers wait for the actual sequence rather than beginning too early.
Barcelona, Seville, and Valencia also hold major New Year's celebrations, but Puerta del Sol is specifically in Madrid. The square is also associated with the Kilometre Zero plaque, from which Spain's radial roads are traditionally measured.