It was established in the summer of 1933 as a concentration camp for 2000 so-called political Schutzhäftlinge (protective custody prisoners) and was for a time the second largest concentration camp after Dachau.
After the war ended, Esterwegen served as a British internment camp, as a prison, and, until 2000, as a depot for the German Army.
The most famous prisoner was writer and editor of the weekly magazine, Die Weltbühne, Carl von Ossietzky, who won the Nobel Peace Prize in 1935.
Comedian Werner Finck was detained in Esterwegen for six weeks.
SS-Hauptscharführer Gustav Sorge, nicknamed "The Iron Gustav" for his brutality, was a guard at Esterwegen prior to being assigned to Sachsenhausen.