Corinth
Archimandrite Nikifor’s Biblical Encyclopedia
(Acts 18:1) - a renowned city of ancient Greece, where Paul lived for eighteen months and founded a notable church, to which he afterward wrote two extensive epistles. Originally called Ephyra, it stood upon the isthmus joining the Peloponnese to the mainland, at the foot of the rocky height crowned by the fortress of Acrocorinth. It had two harbors, Cenchreae and Lechaeum. Its importance as a commercial city with extensive eastern and western connections, and as a strong defense of the isthmus, was universally recognized. When Paul visited, it was the seat of the Roman proconsul Gallio, Seneca's brother.