This is one of the top places outside of downtown that I recommend people to go. The IMA Musuem and grounds (gardens) are FREE. All you have to pay is for parking. (TIP: You may be able to park for free by the greenhouse). The botanical gardens are my favorite part. So many great flowers, water features, green areas, etc. I'm not as much of a fan of the newer added part called the 100 acres. That can be left to see last if you have the time or great on a 2nd visit. Lily House is a nice tour as well done during the summer months. Check out the greenhouse while you're there too. There is a nice cafe inside the museum that serves food, beverages, and alcohol if you want a nice break. If you like to bike ride, find the information for the Central Canal Tow Path that goes behind the musuem that connects with bike paths Downtown Indy & Broadripple and bike to the IMA.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.