It was a concentration camp.
Banjica concentration camp
Janowska concentration camp was created in 1941.
Buchenwald Concentration Camp
There was no concentration camp called "Belgium". There were, however, concentration camps in Belgium.
Cheerleader Camp - 2007 TV was released on: USA: 2007
Camp Reality - 2007 was released on: USA: 30 January 2007
Pirate Camp - 2007 was released on: USA: 1 January 2007
The cast of Concentration Camp - 2007 includes: Jillian Bell
Kill Camp - 2007 was released on: USA: 12 August 2007 (video premiere)
Base Camp Moon - 2007 TV was released on: USA: 7 May 2007
Effin Sports Camp - 2007 was released on: USA: 2007 (Moondance Film Festival) (premiere)
Dinosapien - 2007 Camp Visitors 1-6 was released on: USA: 2007
Star Camp - 2007 Finale 1-6 was released on: USA: 25 August 2007
Backcountry Boot Camp - 2007 Out of the Woods 1-6 was released on: USA: 17 August 2007
Backcountry Boot Camp - 2007 Into the Wilderness 1-1 was released on: USA: 16 August 2007
Backcountry Boot Camp - 2007 Roughing It 1-2 was released on: USA: 16 August 2007