The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

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

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

On a wall in Cleveland, Ohio find the story of a highly connected fictional community of organisms that created remarkable, lasting structures.

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

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This abandoned cemetery has a dark past of bodies buried over bodies.

The resting place of a Civil War celebrity's amputated limb.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Landmark dedicated to the plight of the American Indian in the 21st century.