The very center of Paris is surrounded by a bevy of strange good luck rituals.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

This narrow shop in the East Village hosts a matchmaking service for the new millennium.

There are owls with glowing eyes in Herald Square.

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

Down a stairway in the East Village, you could once read a plaque describing an alternate history of a fictional version of Manhattan.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A whimsical, but often overlooked clock in Park Avenue.

Unrepaired walls from a 1920 anarchist bomb attack.

A good place to research the Freemasons, esoterica, occultism, and hermeticism.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

New York's oldest and possibly grandest keeper of books.

Visit the monolithic tomb of America's most famous general.

During the holidays, a vintage subway train whisks New Yorkers back in time.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

Walk over a 150 year old manhole.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

Phil Mortillaro uses keys to bring art back to the Village.