Altdorf bei Nürnberg is a town in south-eastern Germany. It is situated 25 km east of Nuremberg, in the district Nürnberger Land. Its name literally means “Altdorf near Nuremberg”, to distinguish it from other Altdorfs.

The Free Imperial City of Nuremberg was a free imperial city – independent city-state – within the Holy Roman Empire. After Nuremberg gained piecemeal independence from the Burgraviate of Nuremberg in the High Middle Ages and considerable territory from Bavaria in the Landshut War of Succession, it grew to become one of the largest and most important Imperial cities, the 'unofficial capital' of the Empire, particularly because numerous Imperial Diets and courts met at Nuremberg Castle between 1211 and 1543. Because of the many Diets of Nuremberg, Nuremberg became an important routine place of the administration of the Empire during this time. The Golden Bull of 1356, issued by Emperor Charles IV, named Nuremberg as the city where newly elected kings of Germany must hold their first Imperial Diet, making Nuremberg one of the three highest cities of the Empire.