Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

This magnificent Cincinnati graveyard is also a popular public park.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

An art deco ice cream shop covered in vintage train station tiles.

A miniature world of concrete and stone in Springfield, Ohio.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

This Boy Scout retreat acted as "Friday the 13th"'s original Camp Crystal Lake.

In the middle of an abandoned stretch of old Route 50 lies a tombstone that weighs three tons.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

Narrow gorges and deep pools created by long-ago glaciers.

It would take 35 firetrucks to fill this enormous glacial pothole.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

The mounds at this site were reconstructed with the help of archaeologists and historians.

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

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

A melancholy guardian doubles as a judicious godmother to this small town cemetery.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.