The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

An abandoned dollhouse factory.

One man's swirling six-acre monument of stone.

Now the final resting place of prominent artists and musicians, it was originally founded to separate the rich from the poor in death.

Homemade rockets, dinosaurs, and robots make this New York small business much more than a furniture store.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

A relic of FDR's brief foray into utopian urban planning.

Two dozen pinball games hidden away inside a most unlikely location.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

Home to a vast and influential collection of Shakespeareana.

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.

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

A lawn full of retired spacecraft on display at one of NASA's first research labs.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

This 1830s store is believed to be the site of Harriet Tubman's first stand.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

This forgotten boat elevator was an engineering marvel in its heyday.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

The first piece of public art dedicated to LGBT rights.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.