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

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Art deco landmark on the outskirts of Washington, D.C.

A celebrity from the late Cretaceous period.

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The "lovely red Vega" of the legendary record-settling pilot.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

There's a crumbling old mansion inside the Smithsonian National Zoo.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

A historic neighborhood church is reborn as a psychedelic arts collective.

Remnants of a storybook amusement park hidden behind a strip mall.

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

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

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

This former asylum for Black Americans is haunted by its history of violence and racism.

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

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

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.

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

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

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

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.