http://www.pbs.org/wgbh/nova/naziprison/colditz.html

If you are interested about the History of Colditz as a World War II POW camp then this is a well crafted site with views from both the Allied POWs and the German chief of security Reinhold Eggers.

From the site:

“Colditz Castle, a forbidding medieval edifice near Leipzig, Germany, was supposed to be the Nazis’ most escape-proof prison. Incorrigible Allied officers who had repeatedly escaped from other camps were sent to Colditz, the only German POW camp with more guards than prisoners. Yet English, French, Polish, Dutch, and other inmates managed to sneak out in surprising numbers. “