Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

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

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A much-maligned monument to teetotalism.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

Go take a picture with the inventor of the daguerreotype photographic process.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

This taxidermy horse was a Civil War hero.

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

A small, forgotten prison cemetery marked only by a wrought-iron fence and eerie depressions left in the ground.

There’s a hidden military meme engraved on the World War II Memorial.

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

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Obscure Freemasons still live in D.C.’s largest private residence.

The site of the climactic scene from the classic horror film is now a historic landmark.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.