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

One of the last Jazz Age "Wonder Theaters" in New York City.

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

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

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

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

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

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

A riverfront park that both remediated and preserved its industrial past.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

This Queens beer hall preserves a German culture and language that is all but lost.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

This Orthodox Church's exterior is rather unorthodox.

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

A temple belonging to the largest Buddhist order in South Korea nestled in the middle of New York City.

This landmark building is now a vibrant performing arts space with musical acts from around the world.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

Holding the most bodies of any cemetery in the United States.