Ahlden is a municipality in the Heidekreis district in Lower Saxony, Germany. It is situated on the river Aller, approx. 15 km southwest of Bad Fallingbostel, and 30 km southeast of Verden.
Ahlden is located in the Samtgemeinde ("collective municipality") of Ahlden.
Napoleonic wars officer Christian Friedrich Wilhelm von Ompteda, a Colonel in the British army's Kings German Legion who died in action at the Battle of Waterloo was from Ahlden.
The Aller is a 211-kilometre (131 mi) long river in the states of Saxony-Anhalt and Lower Saxony in Germany. It is a right-hand, and hence eastern, tributary of the River Weser and is also its largest tributary. Its last 117 kilometres (73 mi) form the Lower Aller federal waterway (Bundeswasserstraße). The Aller was extensively straightened, widened and, in places, dyked, during the 1960s to provide flood control of the river. In a 20-kilometre (12 mi) long section near Gifhorn, the river meanders in its natural river bed.
The river's name, which was recorded in 781 as Alera, in 803 as Elera, in 1096 as Alara, has two possible derivations:
The Aller is a major river in North Germany.
Aller may also refer to:
The Aller is a river in northern Spain flowing through the Autonomous Community of Asturias.