Which clock tower supplies the midnight chimes broadcast from Madrid's Puerta del Sol on New Year's Eve?

The clock at Madrid's Real Casa de Correos supplies the midnight chimes broadcast from Puerta del Sol on New Year's Eve.

The Real Casa de Correos is the historic building at the center of Madrid's Puerta del Sol. Its clock became nationally important because its twelve midnight chimes provide the rhythm for Spain's traditional New Year's Eve grape-eating ritual.

Television broadcasts show the clock and the square as viewers prepare twelve grapes, eating one with each chime. The ceremony is so familiar that the building and its clock are often treated as symbols of Spain's national countdown.

The clock is sometimes incorrectly called “Madrid's Big Ben.” Big Ben is the nickname of the Great Bell at the Palace of Westminster in London, while Madrid's countdown uses the clock installed on the Real Casa de Correos. The building also serves as the seat of the President of the Community of Madrid.