This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Wedged between two sets of row houses is an awkwardly located family graveyard.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

The likeness of the Baltimore music icon was unveiled in time for the anniversary of his Senate hearings on music censorship.

This abandoned sea fort has become an accidental bird sanctuary.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Ship skeletons haunt Baltimore's waterways.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

America's first federal monument.

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

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

This historic boathouse was constructed using salvaged lumber from burned barns.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

A piece of baseball history is preserved in a Pittsburgh parking lot.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

The oldest military monument in the United States.

This memorial honors five journalists who were killed in a mass shooting in 2018, and affirms the importance of the first amendment.

This statue honors the author's groundbreaking family story.