Christoph Ahlhaus is a German politician. He is a representative of the German Christian Democratic Union which he joined in 1985. He was the mayor of Hamburg from August 2010 to March 2011.

Ole von Beust is a former German politician who was First Mayor of Hamburg from 31 October 2001 to 25 August 2010, serving as President of the Bundesrat from 1 November 2007 on for one year. He was su