Offenburg ("open borough" - coat of arms showing open gates; Fr. Offenbourg) is a city located in the state of Baden-Württemberg, Germany. With about 57,000 inhabitants (2013), it is the largest city and the administrative capital of the Ortenaukreis.

Offenburg is located approximately 15 km east of the river Rhine between Karlsruhe and Freiburg. The French city of Strasbourg lies directly west across the Rhine. Offenburg lies at the mouth of the Kinzig river valley. The Kinzig flows out of the Black Forest and meets the Rhine near Kehl.

In recent times the remainders of Roman settlements have been found within the city's territory. Offenburg was first mentioned in historical documents dating from 1148. By 1240 Offenburg had already been declared a Free Imperial City. In September 1689 the city - with the exception of two buildings - was totally destroyed during the Nine Years War by French troops. Due to Napoleon's dissolution of the Holy Roman Empire in 1803 and reorganization of the German states, in 1803 Offenburg lost its status as a Free Imperial City and fell under the rule of the Grand Duchy of Baden.

During the outbreak of the Revolutions of 1848, the "Offenburger Programm" which contained thirteen demands "in the name of the people of Baden" was announced at the Salmen Inn on 12 September 1847. This was the first democratic demand in Germany. Along with the Karlsbad Resolves, the Offenburger Program demanded basic and human rights as well as freedom of the press and a progressive income tax structure. On 19 March 1848 the demands were confirmed by the 20,000 member Offenburg Peoples' Assembly.

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