The Maiden Tower (Azerbaijani: Qız qalası; Persian: قلعه دختر) is a 12th-century monument in the Old City, Baku, Azerbaijan. Along with the Shirvanshahs Palace, dated to the 15th century, it forms a group of historic monuments listed in 2001 under the UNESCO World Heritage List of Historical Monuments as cultural property, Category III. It is one of Azerbaijans most distinctive national emblems, and is thus featured on Azerbaijani currency notes and official letterheads.