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

The trials and tribulations of marking Poe's grave.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

Yo, Adrian!

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

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

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

Perhaps the most scandalous statue of America's first president.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

This poor little statue is the most vandalized memorial in Washington.

There’s a hidden military meme engraved on the World War II Memorial.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

The house where John Wilkes Booth conspired with his co-conspirators.

A nostalgic bibliographic gem.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

It was once the base for a series of domestic terror attacks.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

Locals spent years successfully fighting to save this beloved Brutalist behemoth from demolition.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.