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

The third tallest lighthouse in America once guided author Stephen Crane to safety.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

An abandoned stretch of highway, deteriorating next to the operational one.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

The longest step street in the city.

A living antique aviation museum in the historic town of Red Hook, New York.

The oldest continuously inhabited street in America.

100 massive sculptures in the Hudson River Valley.

The remains of what was once the world's steepest passenger funicular.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

This abandoned factory on the Hudson River once churned out a million bricks a week.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

This forlorn park is the result of a failed investment turned tax dodge.

An abandoned Victorian-era mill in the middle of modern Manchester.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.