A former Nazi lookout tower with a magnificent view of the Rhineland.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

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

Over fifty whirling pools left by the glacial age.

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

The building that inspired Shirley Jackson's "The Haunting of Hill House."

A monument to the Mohawk people stands along an old Native American trade route.

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

The infamous Boston Mob ran rackets from an office here in the 1970s.

A cave dug by a man directed by ghosts to find pirate treasure.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

No one really knows how these old hobby horses got here, but the herd keeps growing.

An 80-year-old house built out of newspapers.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

This tower pays homage to a legendary Viking fort established in Massachusetts that never really existed.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

The homestead of American patriot John Adams.

A beautiful Victorian-era cemetery, complete with a miniature village.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

Three prestigious academic collections come together to create a world-class natural history museum.

Museum dedicated to awful artwork.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.