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

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

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

World's largest herd of white deer populate a former U.S. Army depot.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

A posh members-only club with a literally dramatic history.

Eclectic architecture in the woods of New York.

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

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

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

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Unique antiquarian shop specializing in globes, maps, and prints.

The oldest surviving synagogue in New York City is now a soaring art space.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A crumbling hospital from the 1850s on Roosevelt Island.

Founded in 1925, this folk school attracts students from across the country and preserves traditional Appalachian art.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.