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

A lawn full of retired spacecraft on display at one of NASA's first research labs.

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

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.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

Meet some of the most prominent figures in Black history through life-sized wax models.

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

America's first nuclear-powered merchant ship is now a time warp to the atomic age.

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

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

The whole world in one water tank.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

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

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

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

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.

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

Built by the patriotic residents of Boonsboro in a single day.

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

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

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