Joel Meyerowitz was the only photographer with regular access to Ground Zero in the weeks and months following 9/11. As part of our Commemorative 9/11 issue, TIME commissioned Meyerowitz to venture back to Ground Zero and document the rapid changes at the site since late 2010. Meyerowitz was able to reflect on and even re-photograph many of the locations in his seminal work, Aftermath: World Trade Center Archive.

To see TIME’s 9/11 Commemorative issue visit Beyond 9/11:Portraits of Resilience.