One of the most important monuments offered by the Athenians to Delphi is the Stoa which is located next to the Polygonal Wall, at the centre of the Apollo sanctuary. It was built in accordance to the Ionic style, in 478 B.C at the time of Pericles, to exhibit the Athenian trophies from their sea battle victory against the Persians, but victories from other wars were added in later years. This monument was built for the glory of Athens.

The Stoa of the Athenians was built by using columns constructed from a single marble block (monolithic) rather than the more traditional method of laying separate sections to construct a column. There were eight columns made from Pentelic marble, found in the Athens area.