Here are the train stations in the order in which I saw them. In a few cases I spent a few hours waiting for a train. I actually saw the stations in NYC, Chicago, San Antonio and Los Angeles twice.

Penn Station, New York City

penn station entrance

Union Station, Chicago

union station chi exterior

Union Passenger Terminal, New Orleans

union passenger terminal new orleans

San Antonio Station

san antion station

Austin Station

union station los angeles

Union Station, Los Angeles

union station los angeles

Santa Fe Depot, San Diego

santa fe depot, san diego

Union Station, Portland

union station portland