Train stations are the cathedrals of the modern age. And there is no better example than Grand Central in New York City. Enter through the stone portals from the bustling sidewalks of 42nd Street to the main concourse and you can’t help but be awed-- your gaze will be pulled to the celestial heavens, which in the case of Grand Central are reproduced in cerulean blue on the vaulted ceiling. February 2013 marks one hundred years since the beaux arts train temple in the middle of Park Avenue emerged as an elegant gateway to Midtown Manhattan (the present edifice replaced earlier buildings). The evolution of Grand Central reflects the history of the modern city itself. At one time an open gash of dangerous rails traveled by smoke-belching locomotives burned through NYC from 125th to 42nd Street, and pedestrians and other traffic risked life and limb to cross from one side of Manhattan to the other. Nearby inhabitants inhaled the fumes of the coal-powered machines and endured the no...