This 1830s store is believed to be the site of Harriet Tubman's first stand.

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

The Decoy Capital of the World.

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

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

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

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

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

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

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

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

Brain collection and database that narrows the gap between man and animal.

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

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

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

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

Bizarre Cavern.

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

An astounding collection of medical specimens, including bits of President Lincoln.

This abandoned sea fort has become an accidental bird sanctuary.

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

A mammoth pair of Civil War artillery guns abandoned out in the forest.

A collection of artifacts from Maryland's maritime past.