Nienburg is a town and capital of the district Nienburg, in Lower Saxony, Germany.

The German Timber-Frame Road is a German tourist route leading from the river Elbe in the north to the Black Forest and Lake Constance in the south. Numerous cities and towns each with examples of the vernacular timber-framed houses traditional to the German states are situated along the road. The total length of the route is nearly 3,000 km (1,864 mi).