The Treasury of Athens is a building at Delphi, the holiest of Ancient Greek sites and shrine to the god Apollo. It was built to commemorate the Athenians' victory at the Battle of Marathon. It is one of a number of such treasuries, built by the various states—those overseas as well as those on the mainland—to commemorate victories and to thank the oracle for advice important to those victories. The Athenians had previously been given the advice by the oracle to put their faith in their "wooden walls" – taking this advice to mean their navy, they won a famous battle at Salamis.Photo credit: Sam Korn