An attempt to build a canal near Corinth in Greece was made by the Romans under the orders of the Emperor Nero in 67 AD, but it was abandoned. However, a French company built a 6.4 kilometers (4 miles) long canal, which opened in 1893.

The Corinth Canal is now a canal that connects the Gulf of Corinth with the Saronic Gulf in the Aegean Sea. It cuts through the narrow Isthmus of Corinth and separates the Peloponnese from the Greek mainland, thus effectively making the former peninsula an island. The builders dug the canal through the Isthmus at sea level; no locks are employed. It is 6.4 kilometers (4 miles) in length and only 21.4 meters (70 feet) wide at its base, making it impassable for most modern ships. Today, it has little economic importance. It is now used mainly for tourist traffic.

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