Eupalinus
EUPALINUS, of Megara, a Greek architect, who constructed for the tyrant Polycrates of Samos a remarkable tunnel to bring water to the city, passing under a hill. This aqueduct still exists, and is one of the most remarkable constructions in Greece (see Aqueduct: Greek).
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)