A couple of years ago, I walked the underground passageway beneath 6th Avenue in Rockefeller Center; you can walk from 42nd 47th Street all the way to 5th Avenue and…
Rockefeller Center
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The west side of 6th Avenue between West 48th between West 48th and west 51st Streets is home to 4 gargantuan office buildings, each with a building number ending in…