A Medieval Water Tower in the Heart of Massachusetts.

Why have you never heard of the second most popular tourist site in New York?

A hidden "place of interment for gentlemen."

A New England ghost town features a trail of boulders etched with intriguing life lessons.

Ruins of a German Castle on top of a towering stone pillar.

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

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

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

World's largest barrel containing an inn.

The world's second largest single-dish radio telescope, once used to contact E.T.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A New England curiosity cabinet, one hundred years on.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

The second oldest continuously operating bar in Louisiana.

Like Mardi Gras, only everyone's a pirate.

A school teacher's massive and terrifying self-built castle.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A place to eat for on-the-run agents and espionage enthusiasts.

Webcam that broadcast the hatching of Bald Eagles to millions of viewers.

Be a ninja - or just act like one.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

An intricate and amazing house built by architect Karl Junker.

Gargoyle head that brings good luck.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.