Anna Anderson spent most of her life claiming to be the lost Romanov child Anastasia.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

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

This pun was simply waiting to come to life, and one defense contractor made it so.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

The only surviving fragment of the lost Narragansett Pier Casino.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

Dedicated to one of the darkest moments in Irish history.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

A beautiful multicolored mound formed by the mineral deposits of the Orenda Spring.

A CT scan revealed the identity of this 3,000-year-old mummy that everyone erroneously thought was female.

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

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

A bunker "with enough U.S. currency to replenish the cash supply east of the Mississippi" in the event of nuclear war now protects nitrate film.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.