The U.S. Army Corps of Engineers, which operates and maintains McAlpine, calls it a "marvel of engineering" — allowing safe passage through the Falls of the Ohio, the only natural obstruction on the ...

The Chattahoochee River National Recreation Area in Sandy Springs, Georgia, is exactly that kind of wonderful contradiction.

Deep in the heart of the Appalachian Mountains, in the south-east of the United States, the Blue Ridge Parkway stretches for ...