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

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

The floor-to-ceiling collection in an old factory is a unique alternative to stuffy galleries.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Finally, you don't have to be a pious Swedish seaman to relax like one.

Constructed in the 1920s, this former pencil factory is now an office building.

The oldest continuously inhabited street in America.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

The Underground Railroad passed right through this historic Brooklyn Heights church.

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

Failed state-supported institution meant to rehabilitate students with intellectual disabilities.

The great American road trip, but smaller.

Ever wanted the laymen's version of your credit card fine print?

This throwback amusement park is home to rides and unique storybook figures from the past.

Museum dedicated to the struggles of the disabled.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

Possibly the smallest church in the world floats in the middle of a pond.

Quite possibly the last cross all humans will ever see.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

The Vatican of the movie industry turned into an actual church.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.