Visitor Michael Melen wrote in with a description of a radio hoax from the mid '80s:
"Baltimore had recently undergone a revival of its downtown area, centered on the Inner Harbor development. A radio ad trumpeted the newest addition to Baltimore's Inner Harbor: the world's very first underwater shopping mall called the Loch Ness Mall. The ad went on to describe how wonderful the mall would be and when it would open. It turned out to be a concoction of a radio advertising group, hoping to display the power of
radio advertising... It was a very beguiling ad!"