I visited the Morton Arboretum in March so my view lacked Spring foliage and flowers, summer green, autumn colors, or winter snowscapes. I say this to give context to my perspective that this place is nice but the entry fee did not offer much more than can be found in many well-maintained parks.
I spent most of several hours on various trails through different treescapes. I appreciated the great variety of trees and saw a small variety of birds plus a few squirrels.
The Arboretum is worth a visit and I suspect it would be great to visit often if living nearby.
In addition to the trails, there are educational programs as well as mazes and play areas for children.
The store and cafe were inviting but as usual in similar places, the prices are not cheap. The toilets were clean and well-maintained.
There appears to be plenty of parking.
Check the website for details on fees and events.