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

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

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

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

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

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

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

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

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

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

A local farm's collection of unusual structures from a now defunct storybook amusement park.

A priceless collection of the Nation's cryptologic history.

The land is home to swimming ponies and a legendary 18th-century treasure.

A museum dedicated to exhibiting remarkable outsider art.

This free, take-a-book shop seems like a trick but isn't.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

At 207 feet, one of the world's longest continuous escalators.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.