Nideggen is known for its ruined, but partly restored castle (Burg Nideggen) and the sandstone rocks along the Rur. It is twinned with Thatcham in Berkshire, England. The first mention in history was in 1184.
The town was created in 1972 by amalgamation of eight until then independent communities: Abenden (782 inhabitants), Berg-Thuir (709), Brück (301), Embken (734), Muldenau (161), Nideggen (2.983), Rath (757), Schmidt (2.974), Wollersheim (637) (December 2014). It is situated between 250 and 450 metres above sea level.
Nideggen lies on the river Rur and at the banks of the Rurtalsperre, the second largest dam in Germany. The region is famous for its precipitous Early Triassic rocks of Buntsandstein in the valley of Rur and is situated between 250 and 450 metres over sea level.