Free. Its a very nice playground. But ti get into Eisenhower park you need to show ID that you were Nassau County or you do have to pay to get into the whole complex. I believe it's $5. Not sure
It is free... imagine that.
Though it's free to use the park and it's facilities, you do have to pay a parking fee (we were asked for $10) if you do not have a Nassau County ID with you.
I believe its still free to use the park ..
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