A historic Black graveyard hidden in the parking lot of one of America's largest malls.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

At this farm in upstate New York, the former president plotted his reelection campaign.

This forgotten graveyard in rural New York State once served a pioneering hospital.

Want to build a wind turbine? Secede from the nation.

New York's unstoppable progress turned this cemetery into the smallest burial ground in the city.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

The schoolhouse where Jesse Merwin, the inspiration for the "The Legend of Sleepy Hollow" character, once taught.

One of the only single-person private gravesites in New York City.

All that remains of a magnate's dream home is a historic gate and an abandoned public pool.

A beautiful final resting place with some surprising residents.

Believe It or Not, Ripley once called this chiseled mountainside “New York’s Mount Rushmore”.

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

You must take the A train... to the last active cemetery in Manhattan.

A burial ground of rusting metal grave markers.

This sprawling woodland estate was the brainchild of iconic American industrial designer Russel Wright.

An abandoned tuberculosis hospital moulders on into an uncertain future.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

Astonishing collection of helmets, scientific instruments, and medical models.

An unassuming nature trail winds through dozens of tiny houses built for the wee people.

Brooklyn's Barkaloo Cemetery is the resting place of a scant two bodies.

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

Collect holy water from a Bronx grotto.