The whole world in one water tank.

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

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

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

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.

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

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

A remote horde of architectural treasures fit for Indiana Jones.

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

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

A Civil War Museum with some notable medical antiques.

Two dozen pinball games hidden away inside a most unlikely location.

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

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

An abandoned church gets a second life as a massive beer hall and event space.

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

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

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

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

This abandoned sea fort has become an accidental bird sanctuary.

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