There aren't too many operational funiculars around, but Pittsburgh has two!

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

The oldest farmer's market in America is so ancient it was approved by the King of England.

A failed piece of Orientalism has become the proud symbol of a community.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A toxic ghost town sitting atop a massive coal fire.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

A unique collection of diving equipment spanning antiquity to the present day.

A historic presidential getaway on the continental United States' southernmost island.

This lush Florida island is home to the ruins of a crooked ship breaker's tiny empire.

"We Seceded Where Others Failed."

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

A monument celebrating the idea of reaching inaccessible places.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

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