The largest self-built castle in the U.S., six decades in the making.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Take in a rare, face-to-face glimpse of Lady Liberty at this tucked away Red Hook park.

Waterway populated with abandoned projects, including a submarine.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Deadly airliner crash preserved for those willing to climb and pay respects.

Walk into the 19th century without leaving Brooklyn.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Volunteer-run library dedicated to exploring five decades of activism history.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Sniff the Titan Arum's rotting flesh.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.