A historic dam made famous for its turbines and feature in a Hollywood classic.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A historic covered bridge, only one of two remaining in North Carolina.

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.

Bizarre Cavern.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

This bridge is haunted by the ghost of a distraught mother.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Many of the murals covering this sleepy Florida town hide some sort of intentional error.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

The failure of one component toppled this entire bridge during rush hour.