5. There are 37 Miles of Library Stacks Underneath Bryant Park
The stacks of the New York Public Library at Bryant Park contain 125 miles of shelving, 88 miles in the seven stack floors of the Humanities & Social Science Library, and 37 miles in the two-level stack extension under Bryant Park. These self-supporting steel stacks also function as structural elements of the building, buttressing the floor of the Rose Reading Room.
The stacks are made from a grade of Carnegie Steel that is no longer manufactured. An adorable book train helps transport books from the subterranean labyrinth below to readers above ground. Read about the Top 10 Secrets of the New York Public Library.