How long is the Corinth Canal?

The Corinth Canal is an artificial canal in Greece that connects the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea. It cuts through the narrow Isthmus of Corinth and "separates" the Peloponnese peninsula from the rest of the Greek mainland. The canal was dug through the Isthmus at sea level and has no locks. It is 6.4 kilometres (4 miles) in length and only 24.6 metres (80.7 feet) wide at sea level, making it impassable for many modern ships. It is currently of little economic importance and is mainly a tourist attraction.

The Corinth canal concept originated with Periander of Corinth in the 7th century BC. Daunted by its enormity, he chose to implement the "Diolkos", a land trackway for transporting ships, instead. Construction of a canal finally began under Roman Emperor Nero in 67 AD, using Jewish prisoners captured during the First Jewish–Roman War. However, the project ceased shortly after his death.

Construction finally recommenced in 1881 but was hampered by geological and financial problems that bankrupted the original builders. It was completed in 1893, but, due to the canal's narrowness, navigational problems, and periodic closures to repair landslides from its steep walls, it failed to attract the level of traffic expected by its operators.