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![American soldiers view the bodies of prisoners laid out in rows in an open field at Ohrdruf, a subcamp of Buchenwald in Germany. [LCID: 38099]](https://encyclopedia.ushmm.org/images/thumb/f1997598-e9d6-426e-bdc6-41d3ff9ccb45.jpg.pagespeed.ce.mYQppyNBc6.jpg)
Featured Article
Concentration Camp System: In Depth
The camp system was extensive. It included concentration camps, labor camps, prisoner-of-war camps, transit camps, and killing centers.
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Introduction to the Holocaust -
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Book Burning -
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German Invasion of Western Europe, May 1940 -
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Displaced Persons -
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Liberation of Nazi Camps -
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Concentration Camp System: In Depth -
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Voyage of the St. Louis -
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Antisemitism -
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Genocide of European Roma (Gypsies), 1939–1945
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![Refugees aboard the "St. Louis" wait to hear whether Cuba will grant them entry. [LCID: 44112]](https://encyclopedia.ushmm.org/images/thumb/19889f9a-e2f1-4e98-9be4-6e0689c96e94.jpg.pagespeed.ce.RiBLPnvFYB.jpg)
![Illustration from an antisemitic children's primer. [LCID: 10640c]](https://encyclopedia.ushmm.org/images/thumb/4c6348d1-d3e6-4be3-aae5-b12761f4f20a.jpg.pagespeed.ce.ZYVA_641w6.jpg)
![Deportation of Romani (Gypsy) families from Vienna to Poland. [LCID: 22005]](https://encyclopedia.ushmm.org/images/thumb/bd14360a-6cc2-4b64-8c68-32430f2350ee.jpg.pagespeed.ce.8cLU0l8qWq.jpg)
Explore the Encyclopedia
ID Cards
Learn more about personal experiences during the Holocaust
Timeline of Events
Explore a timeline of events that occurred before, during, and after the Holocaust.
Discussion Questions
How and why was the Holocaust possible?