A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

These lush botanical gardens employ the most purrfect pest control force.

This might just be the TARDIS of bookstores.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

These mystical miniature houses bring a touch of magic to the New Jersey woods.

The real-life site of Ichabod Crane's infamous gourd attack.

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

For decades, this waterfall remained hidden because of an artificial dam.

This public space is speckled with the eerie remnants of a defunct amusement park.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The graffitied ruins stand hidden within the Pennsylvania woods.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

A winding, cliffside stretch of road overlooking the Delaware River.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

The oldest continuously inhabited street in America.

This once-private estate is now a dreamy, meditative garden that's open to the public.

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

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

This magnificent Cincinnati graveyard is also a popular public park.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

The longest navigable underground river in the United States is home to countless blind and albino animals.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.