This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Home to first responders to Greenpoint's devastating oil fires.

2 square block factory in Greenpoint erected in 1936.

Nature and beauty amidst pollution and industrial wreckage.

A modern addition to the Greenpoint skyline.

Nondescript building owned by ExxonMobil working on siphoning Greenpoint Oil Spill out of the ground.

A 9-story, poured concrete structure which was used as a glue factory with an indelible smell.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

The place where Dvořák composed some of his most famous works.

The one-time office of the architectural firm that ushered in the Gilded Age is now a Club Monaco.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

Cryptic messages embedded in the New York City sidewalk.

A small part of lower Manhattan is actually made from a bit of England.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

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

The home of one of America's most beloved fictional characters has become a real world landmark.

This semi-hidden Manhattan restaurant is based out of a loading dock.