A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A priceless collection of the Nation's cryptologic history.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Two plaques commemorate the site of Shakespeare's first theatre.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

There aren't too many operational funiculars around, but Pittsburgh has two!

This bare tree might not have leaves but it is constantly clothed in festive decorations left by mysterious local benefactors.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

This eagle-topped spire remembers the military commander who snatched up California for the United States.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

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

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

The world's largest rotating world.

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

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

Could it have picked a better place to land?