It is feared that the transfer will result in a deterioration of the conditions under which Steudtner is held.
The German government continued to demand that Turkey release the human rights activist.
Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity.
A region named Germania was documented before 100 AD.
Princes of the German states gathered there to proclaim Wilhelm of Prussia as Emperor Wilhelm of the German Empire after the French capitulation in the Franco-Prussian War.
The German government has called for the immediate release of two opposition politicians in Venezuela.
Germany's capital and largest metropolis is Berlin, while its largest conurbation is the Ruhr, with its main centres of Dortmund and Essen.
The country's other major cities are Hamburg, Munich, Cologne, Frankfurt, Stuttgart, Düsseldorf, Leipzig, Bremen, Dresden, Hannover and Nuremberg.
Chinese leader Xi Jinping says US President Donald Trump should exercise restraint in the North Korea crisis.
Trump said Friday the US military was "locked and loaded," as Pyongyang accused him of war mongering.