Apollo was the son of Zeus and the Greek god of healing, the arts and the sun. After killing the giant serpent Python to protect his mother on Mount Parnassus, Apollo decided the site should be his first temple. Disguised as a dolphin, he lured Cretan priests and then carried them on his back to Delphi. There have been three Temples of Apollo at Delphi. The first – built in the 7th century BC – was wooden decorated with laurel branches. A marble replacement was constructed in 513 BC and then toppled by an earthquake in 373 BC. It measured 71 by 190 feet. You are looking at the ruins of the third temple finished in 330 BC. The Doric structure followed the same footprint of the earlier version. The Oracle of Delphi used to sit in the inner sanctuary below the remaining columns. This temple was destroyed by order of Roman emperor Theodosius I in 390 AD.