by: Frank Ritter RitterPhoto.com
Every year on the anniversary of 9/11, architectural photographer Frank Ritter, www.RitterPhoto.com, contributes a photo essay tracking the progress of the World Trade Center site. This year’s series also includes photos of the recently-opened 9/11 Memorial Museum.

Visitors laid flowers on the 9/11 Memorial to remember the victims who lost their lives in the attacks.

The entrance to the 9/11 Memorial Museum, with two of 84 tridents that gave the original Twin Towers their distinctive lower façades.

Though it did not breach, the slurry wall (left) suffered damage on 9/11, which required repairs and reinforcement during the recovery and cleanup period.

The Last Column assumed a symbolic status at Ground Zero for the site’s recovery workers and those who witnessed their efforts. It was removed from the site on 05.30. 02. In the weeks leading up to its departure, recovery workers, responders, volunteers, and victims’ relatives signed the column and affixed messages, photographs, and other tributes.

The column, which once stood in the core of the South Tower, folded over into itself during the tower’s collapse.
Click here to view photos from last year.