Peek through a transparent pyramid and drink in the mountain made of books.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

The attic of a four-century-old canal house hides a clandestine church.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Museum preserving torture methods from the past.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

This 13th century castle is chock full of ghosts and impossibly rare cows.

When flour explodes, it's not a pretty sight.

European castle ruins in an American state park are actually the product of death and grief.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The kind of mixed-up place that drives archaeologists crazy.

Marie told fortunes from her small stand on the Boardwalk for decades, including to a young Bruce Springsteen who would busk outside her booth.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

An ideal wedding spot that is almost too ideal.

This park contains a number of standing stones meant to heal and inspire.