No charge for parking...just the meters. Right next to the towers. You will have to pay the elevator fee for going to the top of the tower. Well worth it.
I didn't drive there, so I don't remember that. If there is a parking fee, it would possibly be metered. There is an entry to the tower. I was just there about 2 weeks ago and it was $9 per person. Hope this helps.
you can entry free in the tower but you must pay to climb with escalator 9 or 10 $
Parking is free, but limited space
There's parking on the street also! Few blocks from tower
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