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

The whole world in one water tank.

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

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

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

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

A remote horde of architectural treasures fit for Indiana Jones.

This abandoned Victorian-style house was built in 1884.

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

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

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

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

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

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

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

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

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

This abandoned sea fort has become an accidental bird sanctuary.

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

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.