Stutthof was a Nazi German concentration camp established in a secluded, wet, and wooded area near the small town of Sztutowo (German: Stutthof) 34 km (21 mi) east of the city of Danzig in the former territory of the Free City of Danzig. The camp was set up around existing structures after the invasion of Poland in World War II, used for the imprisonment of Polish leaders and intelligentsia.[1][2] The actual barracks were built the following year by hundreds of prisoners.[3]