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

One man's swirling six-acre monument of stone.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

Try not to get slimed in Tribeca.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

The cave where two British judges hid in exile after sentencing the king to death.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.