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

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The wooded estate of the Forest Service employee responsible for D.C.’s cherry blossom trees.

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

This historic lighthouse was well known for the large number of women who served as its keeper.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

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

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

A star fort along the C&O Canal in western Maryland that protected America in three wars.

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

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

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

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

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

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

The trials and tribulations of marking Poe's grave.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.