BiblePlaces.com has photos showing notable sites from ancient Corinth, including a panoramic view of the Peloponnese peninsula ; the now-silted harbor; and the Diolkos (a stone track upon which ships were lugged from one sea to another before the completion of the canal).
Acts 18:18 records Paul’s activities at one of Corinth’s ports: “And Paul after this tarried there yet a good while, and then took his leave of the brethren, and sailed thence into Syria, and with him Priscilla and Aquila; having shorn his head in Cenchrea: for he had a vow.”