You want to know about Nuremberg but do not specify if you want to know about before, during or after World War 2. So I will address your answer in those terms.
After: The famous Nuremberg Trials of the Nazis charged with war crimes happened for several years. 24 major leaders of the Nazi Regime were tried, convicted and most of them were executed for their atrocious crimes. See related links below.
During: Nuremberg had been heavily bombed from the air by the Allied Forces of the Royal Army Air Force and the United States Army Air Force.
Before: Hitler had a huge arena built and other significant buildings. They held immense rallies and conventions in this city and at the arena. You can see these gatherings on films and in photographs.
P.S. Nuremberg is spelled that way.