The ironic and heartbreaking gate into Auschwitz..."Arbeit Macht Frei", translated means "work makes you free". This gate was stolen in December 2009 by two Poles and a Swedish former Neo-Nazi leader. It has since been recovered, but in the spirit of security, the original is protected within the museum, and a replica is kept outside.
One of the two large gas chambers in Birkenau (the second and larger camp in the same city). These structures were destroyed by the Germans to remove evidence of their crimes on January 26, 1945.