For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The only tennis court that falls under the jurisdiction of the central bank.

The "Key of Keys" for Washington, D.C. and the apocryphal landing place for the military campaign that started George Washington's career is now at the bottom of a well.

The rogue roots are gradually consuming some of the historic marble grave markers.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

One of the oldest standing structures in Montgomery County, Maryland.

This heritage museum highlights the importance of the dairy cow as a vital part of rural Maryland's past, present, and future.

The oldest surviving one-room schoolhouse in Montgomery County, Maryland.

Dating to 1793, this is the oldest building in Poolesville.

A Civil War Museum with some notable medical antiques.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

One of Gettysburg’s least visited battlefield memorials is off the beaten path, but worth a visit.

Home of the only civilian casualty at the Battle of Gettysburg.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

Once damaged by Hurricane Agnes, this bridge is now on the National Register of Historic Places.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

A line of blue paint marks the route of the inaugural parade.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.