The Old Bouleuterion or Metroön

Replaced as meeting place for the boule (reasons unknown) about 410, but remained the official "public records office" where archives were kept, and became known as Metroön (Sanctuary of Rhea, Mother of the Olympian Gods, whose temple, destroyed by the Persians, had been nearby). Laws, decrees, accounts, records of lawsuits, lists of ephebes etc were kept here: none have been preserved as they would have been on papyrus - copies on stone were often set up in a public place.