One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

A wunderkammer hidden on the top floor of the Hartford statehouse.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A museum dedicated to exhibiting remarkable outsider art.

A castle built by an eccentric medieval enthusiast in rural Ohio.

A bizarre roadside attraction and the first instance of miniature golf in the world.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Hear the quietest sound from across the dome.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

One of only two commuter aerial tramways in the United States.

The trials and tribulations of marking Poe's grave.

The angel of death appears to weep black tears at this grave marker.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Peek through the gates at this oasis from the city, full of Old English charm.

One part local history, 99 parts gruesome haunted house.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

More gold than anywhere else, ever.

An unusual round church in London with a Templar past.