The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

This historic building is now home to the Public Access Corporation for the District of Columbia.

Depending on who you ask, this controversial treehouse is either a charmingly creative child's playhouse or an illegal encroachment on public land.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

Now a living classroom, this house was once the home of Reverend James Clinton Dent, a formerly enslaved man and a pastor.

A beautiful hidden gem in central West Virginia.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

This restored house built from a Sears kit in the 1930s is a physical remnant of FDR's New Deal following the Great Depression.

The sole surviving building from Newgate village, a colonial settlement that was renamed Centreville in 1792 after it was granted town status by the Virginia Assembly.

The last of Fairfax County's one-room schoolhouses.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

This unique structure is the only one of its kind in Virginia.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

A quintet of history museums make this Virginia graveyard as much a resting place for funereal history as it is for people.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Home of Dutchy, an exhumed Confederate statue that was once torn down by an angry mob for looking stupid.

This colonial cabin is the oldest building in High Point, built by one of the first settlers in the area.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

The record holder for the world’s largest peach.

A white oak with property rights.

After just one epic test blast, this literal loose cannon proved too explosive for combat.