A much-maligned monument to teetotalism.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

It was once the base for a series of domestic terror attacks.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The walls of the iconic dome are hollow and have a secret stairway.

Perhaps the most scandalous statue of America's first president.

The 28,000-year-old specimen is remarkably intact.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

A historic neighborhood church is reborn as a psychedelic arts collective.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

Unique tower has outlasted a takeover of the company.

This grave marks the final resting place of a legendary frontiersman... unless it doesn't.

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