Every trip on Amtrak begins at the front door of a station. In rural area and small towns, that front door isn’t much and might not be much of a door at all if the “station” is nothing more than a bus shelter facility.
But in Chicago, Amtrak comes and goes from the ever grand Chicago Union Station. The grandeur of the depot begins with its entrances, of which there are many.
Many passengers, Amtrak and Metra alike, enter Union Station through the Adams Street entrance. If you are here in late afternoon there will be steady stream of commuters heading for their train home.
But no matter the time of day, there is always at least a small crowd of people milling about this entrance during the day.