There is a great light installation on Randolph in between Dearborn and LaSalle. I’ve seen it in the early evening when I was driving downtown. Unfortunately I wasn’t able to stop for very long but it is a really nice site to see. I couldn’t find any information about who installed it or how long it will be up for but i did include a link that shows a video of what I’m talking about. Check it out! It’s just off the blue line if you get off at Washington and walk north on Dearborn then go west on Randolph.