National September 11 Memorial Museum is a museum at the World Trade Center site documenting the September 11, 2001 attacks, the 1993 World Trade Center bombing, their victims, and their continuing historical impact. Free Admission Monday requires a timed ticket released online at 7 a.m. Eastern Time that same Monday, first come, first served. The last museum entrance is at 5:30 p.m. Tours, audio guides, and other add-ons may cost extra. NearbyGrid lists this free-admission opportunity for discovery. We do not host or organize it. Free admission may cover general admission only; special exhibitions, films, rides, parking, reservations, age or residency requirements, or other activities may cost extra or have separate rules. Click Details to confirm the date, time, location, eligibility, reservation requirements, and exclusions on the venue's official page before you go. Source: https://www.911memorial.org/visit/tickets/museum-admission-discounts