A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

This grand gothic brewery has been pumping out suds for over a hundred years.

Baltimore's first skyscraper may be home to the inspiration behind pulp fiction's most celebrated bird.

One artist’s scheme to expand museum viewing hours into the evening led to the illumination of an entire city.

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

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

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

Once America's tallest structure, now a Baltimore landmark.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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

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

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

Believed to be the birthplace of the United States Marine Corps.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

One of the oldest of its kind.

One of Philadelphia's largest murals resides hidden under this bridge.

America’s smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

An Irish Memorial commemorating those who perished due to potato blight.

Alexander Hamilton’s creation caused quite a bit of controversy.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.