For National Holocaust Remembrance day, The New York Times profiles the foundation dedicated to preserving the authenticity of the Auschwitz-Birkenau concentration camp in Poland.
Created in 2009, the foundation works with trained conservators to preserve the site, including inventories of victims' belongings and the structure of the barracks where they were interned. This approach has some critics, who question whether a memorial would achieve the same effect. Conservators say the goal is to make the site last, something against the Nazi's idea for the camp.
Some exhibitions in the on-site museum have been updated and changed. The museum has raised $130-million with a goal of conserving the space in perpetuity.