The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

A relic of FDR's brief foray into utopian urban planning.

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

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

The development and impact of electronic media showcased in a picturesque farmhouse in Maryland.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

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

This one-room cabin where the young colonel slept during the French and Indian War.

The antique hotel still has a jail in the basement, though the cockfighting ring is long gone.

A remote horde of architectural treasures fit for Indiana Jones.

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

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

Ship skeletons haunt Baltimore's waterways.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

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

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

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

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

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

This abandoned sea fort has become an accidental bird sanctuary.