Workers involved in the New York City, Arlington, VA, and Somerset county, PA rescue, recovery, investigation, cleanup, and relief efforts after 9/11 are eligible for free admission to the 9/11 Memorial Museum. To be eligible, workers must register with the Rescue and Recovery Workers Registry, a registry that documents workers who were involved in the post-9/11 effort and also provides a space for them to interact as a community. To register, click here. Upon registering, you will receive an email confirming receipt of the information. There is approximately a 24-hour delay before a new registered user can take advantage of the privilege of free admission.