Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Final resting place of Typhoid Mary.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

The first pet cemetery in the United States.

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

The largest Buddha statue in the Western Hemisphere is just 50 miles north of NYC.

100 massive sculptures in the Hudson River Valley.

This high-perched pachyderm marks the memory of not one, but two elephants gunned down in small New England towns.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

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.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

American artist J. Alden Weir purchased this 60-acre estate for $10 and a painting.

Now home to hardy plants, these sand and gravel dunes once held back a massive prehistoric lake.

Hidden behind a Target are pillows of cooled lava that formed at the bottom of a deep lake in the Mesozoic Era.

This historic railway museum may have lost its passengers but not its love for trains.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

The cave where two British judges hid in exile after sentencing the king to death.