The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

This 5,300-year-old tomb with mysterious carvings crowns an Irish mountain.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

A huge resale shop for the cast-offs of the film & television industry.

Visit this playground of waterfalls, caves and sinkholes.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

The site of the Scopes Trial contains a small exhibit dedicated to the famous case.

Enormous lake at the bottom of a unique cave system.

An alternate history park where the Union Army loses the war... to dinosaurs.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

An eponymous directional signpost erected by the first president of the United States.

Outsider art meets paleontology at this roadside reptile repository.

This overlooked museum houses an amazing collection of rare, antique typewriters.