This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The loneliest island in New York.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

A popular European tradition makes its way to the states on one of America's most famous bridges.

The "Seinfeld" diner.

Ride the subways of yesteryear.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

An unassuming secret door once led to a legendary watering hole.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A semi-scholarly approach to sex.

Try not to get slimed in Tribeca.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

A terrific purveyor of natural history objects and curios.

Unrepaired walls from a 1920 anarchist bomb attack.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.