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

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

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

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

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

This historic boathouse was constructed using salvaged lumber from burned barns.

A portal into the bricked up canal that runs through the heart of Washington D.C.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

An overlooked memorial honoring the local Washington residents who died in World War I.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

These abandoned waterworks are crumbling into the Potomac River.

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

This general store has stood in the same spot for well over a century.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

America's first federal monument.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

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

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

These unusual rooms on wheels are holdovers from the 1960s.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

A former major munitions plant that has been converted into a sprawling art space.