This is the most important monument surviving from the sanctuary of Apollo at Delphi. According to legend it was built in the same place where in the past the mythical temples of Apollo were situated. Thus, the first was made out of laurel branches, the second with bee wax and wings, the third had copper as the main building material, while the fourth was erected by the mythical architects Trofios and Agamidis with the help of the God Apollo itself.
When the fire destroyed the last temple a new impressive temple erected at the same place with the help of contributions. The new sanctuary though was constructed in 510 BC with the sponsorship of many Greek and foreign rulers, as well as the catalytic help of the Athenian family of Alkmaionidon.
From an architectural point of view, the temple was following the Doric style with 6 columns on the front and 15 on the sides. It was hosting excellent sculptures of the artist Antinagoras while its pediments were depicting scenes of the God Apollo at the mythological battles with the giants.
In 373 BC the Sanctuary initiated a fundraiser to collect money in order to rebuild the temple due to the major damages suffered by an earthquake. That temple remains survived until today. Its architects were the Spinthagoras of Corinth, Xenodoros, and the Agathon. While similar to the previous one the new temple had 6 columns on the front and 15 on the sides too. The pediments were crafted from Praxias and Androsthenes and they were hosting scenes of Apollo, the Muses, and Dionysus.
For the interior of the temple scientists know very little. Among them, that the walls had engraved sayings of the seven wise men, there was also a bronze image of Homer and an altar of Poseidon. While the deepest levels were hosting the statue of the God and the "navel of the Earth".