What is the name of the famous clock whose chimes mark midnight on New Year's Eve in Madrid's Puerta del Sol?

The Real Casa de Correos clock marks midnight on New Year's Eve in Madrid's Puerta del Sol.

The clock is mounted on the Real Casa de Correos, the historic building that faces the square. Its midnight chimes are broadcast across Spain and provide the timing for the traditional twelve grapes eaten on New Year's Eve. Millions of viewers follow the sequence from homes, public gatherings, and television broadcasts.

Puerta del Sol is one of Madrid's best-known public spaces and a major symbolic center of the country. The building itself dates from the eighteenth century and now houses the regional government of the Community of Madrid. The clock became central to the national countdown tradition through the reach of radio and television.

Visitors sometimes answer “Big Ben,” because that clock is associated with London's New Year's celebrations. Big Ben is the nickname for the Great Bell at the Palace of Westminster, while Madrid's grape ritual is timed by the Real Casa de Correos clock.