If you like nature walks, be sure to venture out to Picnic Point. There are fanstic views of Lake Monona. It's very relaxing! We took the picture in the header on Labor Day, 2019.
There is a parking lot over by the trailhead entrance (Lot 130 free on weekends).
You can also walk along the Lakeshore Path, which runs behind the Union, all the way to Picnic Point! It's 3 miles from the Lowell Center, along the Lakeshore Path, to Picnic Point.