Torre del Oro
Meaning "golden tower". Located on the left bank of Guadalquivir, possibly its Arabic name was Bury al-dahab or Borg-al-Azajal, in reference to its golden glow reflected on the waters. Restoration works showed this shine came from a combination of lime and straw. With its construction (1221), the defensive system of Almohad Ishbiliya was completed. Its function: to defend the port with a big chain that prevented the entry of ships and invaders (such as Vikings!).