Detroit's Fort Street Union Depot opened its doors. It would be home to decades of Pere Marquette, Baltimore & Ohio, Wabash, PRR, and later C&O and N&W passenger trains. Steam transitioned to diesel. Whistles became air horns. Heavyweight Pullmans became lightweight stainless steel.
A sad loss for railroad and architectural history, but this write up is pretty thorough and the photo galleries are impressive:
http://historicdetroit.org/building/union-depot/