The National 9/11 Memorial and Museum will open to the public May 21st. Access to the memorial area is free, but visitor passes are required and reservations, which are $2, are encouraged. Access to the museum will cost $24, and tickets for opening day are sold out.
For the rest of us, the New York Times has an interactive tour of the museum. Be aware that several videos will auto-start when you scroll to them. -via Metafilter
(Image credit: Farragutful)