Madrid's famous New Year's Eve clock square where people eat 12 grapes is Puerta del Sol.
At midnight on December 31, people in Spain traditionally eat one grape with each of the clock's 12 chimes. The grapes represent the 12 months of the coming year, and finishing them in time is associated with good fortune. Television broadcasts from Puerta del Sol have made the ceremony recognizable throughout Spain and among Spanish-speaking audiences abroad.
The square contains the clock whose chimes organize the ritual. Viewers must distinguish the preliminary warning sounds from the 12 actual midnight strokes; the grape-eating begins with the numbered chimes, not the earlier signals.
Puerta del Sol is also a major civic landmark and the traditional center from which distances in Spain are measured. The custom is commonly called las doce uvas de la suerte, meaning “the 12 grapes of luck.”