Zed, http:
You must go here,
//www.viator.com/tours/Berlin/Sachsenhausen-Concentration-Camp-Memorial-Walking-Tour/d488-3817CAMP?pref=02&aid=g1230
Go by train from the city centre. Its a harrowing, unforgetable day out. I visited the camp in the late 1980’s and was shown around by one of the ex inmates. I remember that he could name some of the SS guards in the pictures that were on the walls. He told us the story that one of the guards was caught living in Berlin in 1983.
Steve