Plaza de la Puerta del Sol, s/n

Puerta del Sol was originally one of the gateways through the wall which surrounded Madrid in the 15th century and it was named "Gate of the Sun" given that it faced the east. The oldest buildings in the square date back to 1560, however, one of the most renowned buildings, the Casa de Correos, was built in 1768. Today, the Casa de Correos is used as the headquarters for the Madrid regional government. The Kilómetro Cero is a symbolic marking on the pavement north of the Casa de Correos in Puerta del Sol square, and it is said to be the centre of Spain. Another popular tourist attraction in the square is the Oso y el Madroño, a bear and a tree which is used as a meeting spot by locals in the city. If you are in Madrid on New Year’s Eve, Puerta del Sol is the place to go as hundreds of people meet in this square to eat a grape on each strike of the famous clock located in the square.