Use the Heritage and Science Park Garage on 5th St and Monroe. The Science Center will validate parking, which gives you a discount. Metered street parking is also an option, but that costs money most days, and I think you can only pay for up to 2 hours at a time.
There is a paid parking garage, but you can get validated at the Science Center to reduce the rate. I think we ended up paying $5
You have to park in one of the nearby garages or street parking if available.
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