This stunning Connecticut mansion is actually just a one-room-deep hoax.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A human attendant once directed car traffic from this structure before automated stoplights.

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

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

The world's largest public collection of PEZ memorabilia.

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

An easy-to-miss plaque marks the building that first held this 19th-century telephone innovation.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

One of America's first spies started out as a teacher in this little red one-room schoolhouse.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

A work of art that pays homage to a Victorian timepiece in Providence.

Rumors of the occult haunt this upscale 1920s hotel.

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

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

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

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

This parking garage was the site of what was - at the time - the largest cash robbery in history.

Historic Hull Street was actually the first street with a proper name in the Boston area.

Narrowest house in Boston.

This landmark cemetery in Boston was created more than 300 years ago.