The Megarian Treasury at Olympia, was a ancient Greek building, located in the sanctuary of Olympia, which held offerings of the Greek city-state of Megara.[1]
Pausanias, Pausanias Description of Greece with an English Translation by W.H.S. Jones, Litt.D., and H.A. Ormerod, M.A., in 4 Volumes. Cambridge, Massachusetts, Harvard University Press; London, William Heinemann Ltd. 1918. Online version at the Perseus Digital Library.
Frazer, J. G., Pausanias's Description of Greece. Translated with a Commentary by J. G. Frazer. Vol IV. Commentary on Books VI-VIII, Macmillan, 1898. Internet Archive.
The Megarians who are neighbors of Attica built a treasury and dedicated in it offerings, small cedar-wood figures inlaid with gold, representing the fight of Heracles with Achelous. The figures include Zeus, Deianeira, Achelous, Heracles, and Ares helping Achelous. There once stood here an image of Athena, as being an ally of Heracles, but it now stands by the Hesperides in the Heraeum.
On the pediment of the treasury is carved the war of the giants and the gods, and above the pediment is dedicated a shield, the inscription declaring that the Megarians dedicated the treasury from spoils taken from the Corinthians. I think that the Megarians won this victory when Phorbas, who held a life office, was archon at Athens. At this time Athenian offices were not yet annual, nor had the Eleans begun to record the Olympiads.
The Argives are said to have helped the Megarians in the engagement with the Corinthians. The treasury at Olympia was made by the Megarians years1 after the battle, but it is to be supposed that they had the offerings from of old, seeing that they were made by the Lacedaemonian Dontas, a pupil of Dipoenus and Scyllis.