A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

An early-19th-century hotel with a past that is steeped in the Civil War.

This mysterious artificial cave has long puzzled New Englanders.

Mysterious stone tower featured in many alternative histories of the New World.

Founded in 1788, this Rhode Island institution is the oldest operating general store in America.

The final resting place of New England's last "vampire."

A gothic-styled structure that has been the location for several movies.

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

Cars mysteriously roll uphill on this street.

Mysterious face-like images that appeared within an Andalusian house are surrounded by legends of the paranormal.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

A spirited shopping experience.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

The first museum in the United States dedicated entirely to posters.

Detailed facade of a brownstone in Boerum Hill.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

The East Village tenement from the cover of Led Zeppelin’s 1975 album has a tea shop on the ground floor.

A hands-on traveling collection of the innovative devices of yesteryear.

New York City's only preserved family home from the 19th century.

A terrific purveyor of natural history objects and curios.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.