Complex sentence: The factory was located on the eighth, ninth and tenth floors of the Asch Building, at 23--29 Washington Place in the Greenwich Village neighborhood of Manhattan, now known as the Brown Building and part of New York University.
Split into simpler sentences: The factory was located on the eighth, ninth and tenth floors of the Asch Building, at 23--29 Washington Place in the Greenwich Village neighborhood of Manhattan. The building still stands today and is now known as the Brown Building and part of New York University.