Pforzheim (help·info) is a town of nearly 119,000 inhabitants in the state of Baden-Württemberg, southwest Germany at the gate to the Black Forest. It is world-famous for its jewelry and watch-making industry. Until 1565 it was the home to the Margraves of Baden. Because of that it gained the nickname "Goldstadt" or Golden City. It has an area of 98 km² and is situated between the cities of Stuttgart and Karlsruhe at the confluence of three rivers (Enz, Nagold and Würm) and marks the frontier between Baden and Württemberg, being located on Baden territory. Pforzheim is located on the Bertha Benz Memorial Route.

The City of Pforzheim does not belong to any administrative district (Kreis), although it hosts the administrative offices of the Enz district which surrounds the town.

During World War II, Pforzheim was bombed a number of times. The largest raid, and one of the most devastating area bombardments of World War II, was carried out by the Royal Air Force (RAF) on the evening of 23 February 1945. About one quarter of the town's population, over 17,000 people, were killed in the air raid, and about 83% of the town's buildings were destroyed. The town was thought by the Allies to be producing precision instruments for use in the German war effort and to be a transport centre for the movement of German troops. The story of the bombardment is dramatically recounted in the 2011 history book by Giles Milton, entitled Wolfram: The Boy Who Went To War.

Pierre Vogel (b. July 20, 1978 in Frechen), Islamic name Abu Hamza is a German Islamic preacher and a former professional boxer.

Vogel converted to Islam in 2001 and shortly thereafter began courses on Islamic studies in Germany. For two years he studied Arabic and the Quran at the private school Om Al-Qura in Mecca.^{[citation needed]}

In 2006 he returned to Berlin and started teaching Islam at the Al-Nur-Moschee mosque Neukölln, in universities and even among Christians.^{[citation needed]}

After 66 amateur fights^{[citation needed]} he turned professional at the age of 22, fighting briefly (for two years) as a cruiserweightfor the Sauerland club and was undefeated in seven bouts.

Vogel is married to a Muslim Moroccan woman and is father of three children.

He has been described in one German report as a "radical Muslim".

When he appeared at a Muslim meeting in Ferihegy^[when?], he said that polygamy is legitimate due to the fact that there are more women than men in Germany.