Elevated freight railway turned wildly successful urban park.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Try not to get slimed in Tribeca.

Set sail on a small scale.

More gold than anywhere else, ever.

Read a book next to a Midtown waterfall.

A dilapidated dock tells the story of Titanic's missed arrival.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

Storage warehouse of the rich and famous.

Peek through the gates at this oasis from the city, full of Old English charm.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

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.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A posh members-only club with a literally dramatic history.

The oldest living organism in New York City. Maybe.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

A miniature rainforest is growing inside of a Midtown Manhattan office building.