Sunny Jim's Sea Cave in the La Jolla neighborhood of San Diego, California, has been an ocean destination for 123 years.

Estimates of the construction costs of a tunnel running through the Atlantic Ocean have topped £15 trillion. If the ideas for the project eventually go forward, it could mean Londoners could hop ...

The concept involves building a massive tunnel under the Atlantic Ocean. It will span over 3,000 miles (4,800 kilometers). Earlier, the project was seen as impractical since it involves enormous ...