A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

A hidden "place of interment for gentlemen."

A reminder to choose water over wine since 1888.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

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

New York City's only radical feminist independent bookstore.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Thomas Edison's home and final resting place also boasts an impressive garage, where some of the earliest electric cars are on display.

Take a step into the workshop where Edison and his employees revolutionized the world.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A sprawling maze of used books piled from floor to ceiling.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

The 28-foot granite map plots the locations of 40 theaters in New York City.

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

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

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

This former crime corner has been turned into an eclectic community center.

The most confusing clock in New York.

Commemorating the spot where the famous scientist fed his pigeons.

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