South Korea says its Saemangeum seawall has snagged a Guinness world record as the longest man-made sea barrier in the world.
The country’s Ministry for Food, Agriculture, Forestry and Fisheries said Guinness officially confirmed the 21-mile-long seawall is an eighth of a mile longer than the dike at the Zuiderzee Works in the Netherlands…
The Saemangeum project, begun in 1991 and officially completed April 27, links the port of Gunsan, 170 miles southwest of Seoul on the country’s western coast, with Byeonsan Peninsula.
The seawall is significant because it was built in waters as deep as 175 feet, ministry officials said. Most dikes are built in shallow waters no deeper than 60 feet, they added.
The project cost $2.5 billion.
Phew! So, uh, what would it cost if it was built off California?