The museum cost 24 perperson (definitely recommended) not the memorial that's an open space with two large pools with ingraved names of the almost 3000 victims of the attacks.
You need to pay at the museum (airplane)
Go to the museum. Memorial grounds are free but pay to go to the museum.
Its totally free and yes, u can go at any time
The memorial is free..buts it's worth going to the museum which is based there and cover both sites and goes beneath ground ..cost about 20 dollars pet person i would highly recommend this
There is a cost, based on age and if you were involved in rescue, and they are open from 9AM to 9PM.
I recommend the tour. It was very informative! It cost around $40, but you didn't have to wait in any lines to get in, either.
Anytime with no cost....
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