In Spain's New Year's Eve broadcast, which Madrid landmark clock provides the midnight chimes?

In Spain's New Year's Eve broadcast, the Puerta del Sol clock provides the midnight chimes.

The clock on the former Real Casa de Correos building in Madrid's Puerta del Sol is the focus of Spain's famous New Year countdown. People watching at home traditionally eat one grape with each of the twelve chimes at midnight, while crowds gather in the square beneath the clock.

The clock was installed in the nineteenth century and became nationally prominent through radio and television broadcasts. Its chimes signal the transition from December 31 to January 1, making Puerta del Sol a shared national reference point even for people celebrating elsewhere in Spain.

The clock should not be confused with Madrid's other historic clocks or with the tower at Plaza Mayor. Puerta del Sol is also a major city landmark and the point from which Spain's radial road-distance system is traditionally measured. The grape custom and the clock broadcast are related parts of the same celebration, but the clock is the subject here.