Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

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

What happens here stays here – unless it affects the whole world.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

This was one of the first (and last) university-built and operated nuclear reactors.

The highest point on the island known for buildings that touch the sky.

One kilometer of thick brass rod laid out before your eyes.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

Discover the taste of mold.

Visit the site of a subway powered by nothing more than air--and lots of it.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

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

A staggering collection of photographs depicting medical, social, and historical change.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

A whimsical, but often overlooked clock in Park Avenue.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

Hear the tales of New York's most notorious criminals.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

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