So I am going on my second train trip. I will be spending a 4 hour layover in Pittsburgh and a 6 hour layover in Chicago. I did the same last time, and it seemed so long. I am a young girl traveling alone. I am concerned about my safety if I leave the stations in these big cities. So, does anyone have any advice about things to do during these layovers? I just sat at my gate last time, not adventurous enough to explore the stations (well there isn't much to the Pittsburgh station). Are there things to do or see in Chicago's Union Station? What activities do you during layovers? Any suggestions will be appreciated!