The pillar, also known as the Delphi Tripod Altar or the Platian Tripod Altar, is an ancient copper pillar located in Constantinople Racecourse in Istanbul, Turkey. It was part of the Tripod Altar in ancient Greece. Originally located in the Apollo Temple in Delphi, it was moved to Constantinople by Constantine the Great in 324 A.D. There were three snake heads on the top of the 8-meter-high column, which existed until the end of the 17th century.