An interesting section of the route to and from Bremen. The Weser, in its interaction with the Aller and the Alte Aller, has created a variety of landscapes here. This section is worth the visit.
The current riverbed of the Weser was formed in the 17th century. The changes occurred gradually, sometimes much to the annoyance of the riparian residents. For example, in 1680, it was reported that the Wittsande sands near Achim and Bierden, formerly islands, had now grown onto the Achim shore. Similarly, a washer was used as a cow pasture, although it legally belonged to Thedinghausen. Around 1690, the estate's house in the Streek had to be relocated because the Weser threatened to sweep it away. In the 18th century, the affected authorities attempted to prevent changes through hydraulic engineering. Battlements were established, first in the years 1725-29 near Ahsen and on the sharp bank, then at Mullwerder. After the settlement of inevitable disputes, the entire course of the Weser was marked by battlements around 1766. While they stopped the meandering, they caused a deepening of the riverbed, which in turn resulted in erosion of the riverbed.