New York City is a city rich with immigrant population, and it has been this way for a very long time. In these vintage maps from 1894 recently relocated by Slate , you can see just how dense the immigrant population was in New York City, showing the distribution of the principal nationalities by sanitary districts.

These two maps don’t represent the total diversity in any given sanitation district. They only show the largest two or three groups that made up two-thirds of each district’s population. The decision ultimately dramatized the strong presence of foreign-born citizens from Germany, Ireland, Italy, and Russia throughout Manhattan. Pierce told Harpers’ Weekly at the time that Scotch, English, Welsh, Scandinavian, and Canadian New Yorkers were not recorded due to “being in small numbers and perhaps less foreign than the others.”

You could grab a hot meal from a wall, ride a train above Manhattan, and lose hours flipping through records in Times Square — all before lunch. That New York? It's gone. In this video, we explore 12 forgotten pieces of NYC you’ll never see again. From the neon chaos of St. Marks to the silence of a newspaper strike, these moments didn’t just vanish — they were ripped from the city’s soul.

The original Pennsylvania Station was a historic railroad station, opened in 1910 and demolished a short 54 years later. Its grandeur matched or exceeded that of Grand Central Terminal, and was one of the architectural jewels of the City. A new book from author/historian Paul Kaplan titled "New York's Original Penn Station: The Rise and Tragic Fall of an American Landmark" tells the story:

In early twentieth-century New York, few could have imagined a train terminal as grandiose as Pennsylvania Station. Yet, executives at the Pennsylvania Railroad secretly bought up land in Manhattan's infamous Tenderloin District to build one of the world's most spectacular monuments. Sandhogs would battle the fiercest of nature to build tunnels linking Manhattan to New Jersey and Long Island. For decades, Penn Station was a center of elegance and pride. But the ensuing rise of the airplane and automobile began to diminish train travel. Consequently, in the mid-1960s, the station was tragically destroyed. The loss inspired the birth of preservation laws in the city and the nation that would save other landmarks like Grand Central. Author Paul Kaplan recounts the trials and triumphs of New York's Penn Station.

Pick up your copy of "New York's Original Penn Station: The Rise and Tragic Fall of an American Landmark" for just $15 on Amazon.