At the 9/11 Memorial Museum in New York, active-duty military, retired military and 9/11 family members are free. Visit the 9/11 Memorial Museum website for details. Military.com Disclaimer ...

as well as 9/11 rescue and recovery workers, may enter for free. The memorial welcomes visitors daily from 8 a.m. until 8 p.m.; the museum is open Wednesday through Monday and select Tuesdays from ...