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Monographs Excavations in the civic and cultural center of classical Athens began in 1931 and have continued almost without interruption to the present day. The first Athenian Agora volumes presenting ... E.Publication Date: 1957ISBN: 978-0-87661-203-3Volume: 3 Here are presented all the ancient written references, both literary and epigraphical, to the Agora (including its environs) and its monuments. ... The earliest church on the site, built over a wall of the 5th-century B.C. ... The earliest physical remains are those of an Archaic altar; some rubble structures may have been hastily built by refugees during the Peloponnesian War.