The Puerta del Sol (Spanish for “Gate of the Sun”) is one of the best known and busiest places in Madrid. This is the centre (Km 0) of the radial network of Spanish roads. The square also contains the famous clock whose bells mark the traditional eating of the Twelve Grapes and the beginning of a new year. The New Year’s celebration has been broadcast live on national television since December 31, 1962. (excerpt from Wikipedia).