Possible relics of the ancient Roman city are hidden in this restaurant's façade.

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A Manhattan office building is home to the world’s largest chess board.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

The only remaining building in New York to see the inauguration of a president is being slowly overtaken by a grocery store.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

A vibrant, 100-foot-tall mural dedicated to Evelyn Nesbit, the tragic icon of the Gilded Age.

A semi-scholarly approach to sex.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

The world’s first penitentiary, meant to be humane, drove men insane.

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.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

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

This shale formation along the Appalachian Trail once inspired the third president of the United States.

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

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

Time travel with sweets across history at this research-based candy store.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Street names don't get more "late capitalism" than this.