A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

The most historic church in Fairfax County played a role in the creation of the American Red Cross.

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.

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

Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A local prank turned town icon.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

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

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

The "lovely red Vega" of the legendary record-settling pilot.

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

A celebrity from the late Cretaceous period.

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

The most decorated dog of World War I is preserved in the Smithsonian.

This historic sunny-yellow building has an unfortunate connection to the sinking of the Titanic.

The Cadillac Ranch for monster truck aficionados.

Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

This massive swimming pool is the high tech home to the human-powered submarine races.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.