A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

The former home of the reclusive "Weird Wendels" who dominated New York real estate a century before Donald Trump.

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

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

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

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

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

This small New York museum examines Chinese history from its origins right up to its arrival in the city.

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

Hundreds of antique bank vault locks on display in New York City.

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.

Historical figures from New York City's Catholic community reside in Midtown.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

More than 300,000 historical artifacts from the famous music venue, from Duke Ellington's handwritten score to The Beatles' booking slip.

A Manhattan office building is home to the world's largest chess board.

The most confusing clock in New York.

The mummified relics of an American missionary.

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

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

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

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