An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

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

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Unrepaired walls from a 1920 anarchist bomb attack.

The longest and widest floating bridge in the world.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

The only surviving piece of a submarine said to be the most decorated vessel in U.S. history.

The highest point in Washington state is a volcano covered in glaciers.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A wall of chewing gum moonlights as collective art.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

This magnificent Cincinnati graveyard is also a popular public park.

The palatial McDonald's that inspired Wesley Willis.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The world's longest known cave system.