The Kulmhof extermination camp in Chełmno nad Nerem was the first camp set up by the Nazis to exterminate Jews during the Second World War. The history of Kulmhof has long been an area of interest for academics, but despite thorough research it remains one of the least-known places of its kind among the public. Studies of the role of archaeology in acquiring knowledge about the functioning of the camp have been particularly compelling. The excavations carried out intermittently over a thirty-year period (1986–2016), which constitute the subject of this article, have played a key role in the rise in public interest in the history of the camp.