After defeating the Persians at the battles of Salamis (480 BC) and Plataea (479 BC), the 31 Greek cities, by melting all the spoils that they obtained, made a huge bronze incense burner with three entwined serpents to be erected in front of the Apollo Temple in Delphi. Originally it was 8 m / 26.3 ft high, but today it is only 5.30 m / 17.4 ft. This column was brought here from Delphi by Constantine I in the 4th century. According to records, it stood in its place until the 16th century. It is not known what happened to the serpent heads afterwards. A piece from one of the serpent heads is kept in the Archaeological Museums of Istanbul today.