5. The Skylights in the City Hall Subway Station Were Tarred Over During World War II
As a safety measure, the skylights of many structures in New York City were tarred over during World War II including the original Pennsylvania Station, the Ansonia Hotel, and more. The City Hall Subway Station, though underground, was no exception.
Today, some pieces of the skylights are missing while others still show remnants of the tarring. Despite this, you can still get a sense of how stunning the glasswork is. No part of this station has a lack of detail.