u/Final-Scale-6645

Hello! I'm planning a trip to Bloomington to see a friend, and I want to make a day trip out of it. However, I have zero clue of what to see or do whilst there and waiting to meet up. So, I'd like to open the floor up to y'all for any suggestions of activities or sights to see. To narrow it down, here's some helpful criteria:

Cheap or free is most optimal

Fun for 1-3 people

If it requires using my brain, hands, or feet, that would be spectacular. But cool things to look at are also nice too.

I'm going to do some research on my own, but if there's any input, I'd love to hear it. Thanks!