This old cement mine has been used as everything from a mushroom farm to a recording studio.

This cavernous abandoned marble mine is popular with ice skaters in the winter.

Tucked away on the second floor of a small town library is one of the great private Victorian taxidermy collections looking today very much like it did in 1909.

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

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

A stunning garden filled with fantastical environmental folk art and sculptures.

The former residence of Elizabeth “Mumbet” Freeman, an enslaved African-American woman who successfully sued for her freedom.

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

All that remains of the once-booming chain is a single orange-roofed restaurant.

A living antique aviation museum in the historic town of Red Hook, New York.

A mysterious echo seems to defy the laws of acoustics.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

Resonating tubes make music from highway overpass.

More than 200 unconventional musical instruments that anyone can play.

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

The rustic think-space of famed naturalist John Burroughs stands exactly as he left it.

Journey through vintage Americana inside this small Massachusetts shop.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The site of the first "historically true" UFO encounter in the U.S.

A distillery built on (and above!) mobster Dutch Schultz's Prohibition-era underground moonshine business.

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