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Here's an ideal itinerary for 4 days in Indianapolis:
Of course, this is just a sample itinerary - there are plenty of other things to see and do in Indianapolis, depending on your interests!
The Indianapolis Museum of Art is a comprehensive art museum with a collection of over 54,000 works of art spanning 5,000 years of history. It features galleries of American, Asian, European, and contemporary art, as well as gardens, a library, and a sculpture park.