How did Bremen’s landscape influence the city’s growth northward and southward?

The development of Bremen’s landscape was fundamentally shaped by a sand dune that rises 45 feet (15 meters) above the surrounding flat marshes and moors of the Bremer Becken (lowlands).

Because this dune provided a location safely above the flood levels of the Weser River spillway, it served as the site for the city's Old Town. Measuring 25 miles (40 km) long and 2 miles (3 km) wide, this elevated geological feature acted as a decisive constraint and guide for the city's expansion, directly influencing the direction of its growth northward and southward along the river channel.1