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

This former asylum for Black Americans is haunted by its history of violence and racism.

A glimpse into early 19th-century education.

This train station inspired the name of a 1970's rock band and provided the backdrop for their album cover.

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

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

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

The National Park Service’s best-kept secret with views that rival any in D.C.

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

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

These unusual rooms on wheels are holdovers from the 1960s.

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

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

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

One of the earliest and best-preserved buildings in Charles County, Maryland.

Once used by British troops to gather water prior to the Battle of Bladensburg.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

This Georgian-style house built in 1746 is the oldest surviving structure in Bladensburg.

George Washington once stopped by this house for dinner.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.