This is the clock tower in the Puerta del Sol. The New Year's Eve broadcast on television in Spain is filmed on this site. For each time the bell rings at midnight you eat one grape. If you have eaten all the grapes by the time the clock is done you will have good luck in the new year.

The clock rings very slowly, so it was not difficult to eat all of the grapes as long as you started chewing them the moment you put one into your mouth. I ate grapes with my host family in San Cristóbal on New Year's Eve. We removed the seeds from the grapes so that we could eat them faster.