Etzbach

Opperzau is a community of the German municipality Windeck, in the Rhein-Sieg district, in the south-eastern part of North Rhine-Westphalia. The southern part of Opperzau is named Oppertsau, which belongs to the municipality Fürthen and belongs to Rhineland-Palatinate. It is located at the middle course of the river Sieg.

Bitzen is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, Germany.

Fürthen is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, in western Germany.

Hamm is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, Germany. It is situated on the river Sieg, approx. 10 km north-east of Altenkirchen, and 40 km east of Bonn. Hamm is the seat of the Verbandsgemeinde ("collective municipality") Hamm (Sieg). It is the home of the Raiffeisenmuseum honouring Friedrich Wilhelm Raiffeisen who pioneered rural credit unions.

The Huth Pit (German: Grube Huth) was a mine on the territory of Hamm (Sieg) in the county of Altenkirchen in the German state of Rhineland-Palatinate. It is first recorded in 1560. In 1763 a consolidation took place. In 1867 underground mining was begun. The Old Shaft (Alte Schacht) of the pit had a depth of 270 metres. Spathic (carbonate) iron ores containing rhodochrosite were used around 1870s to produce spiegeleisen, a historically important ferromanganese alloy used in steelmaking. Between 1890 and 1937 the mine was closed; it was then re-opened. That year a new shaft was driven, which had a diameter of 3.9 metres and reached a depth of 410 metres. The total depth (Gesamtteufe) of the pit was 465 metres. It had 70 employees and was close in September 1944.

Holperbach (in its upper course also: Bruchhauser Bach) is a river of North Rhine-Westphalia and Rhineland-Palatinate, Germany. It flows into the Sieg near Wissen.

Hamm (Sieg) is a Verbandsgemeinde ("collective municipality") in the district of Altenkirchen, in Rhineland-Palatinate, Germany. The seat of the Verbandsgemeinde is in Hamm (Sieg).

Forst (German pronunciation: [fɔʁst] ) is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, Germany.

The Nister, also called the Great Nister (German: Große Nister) to distinguish it from its tributary, the Black Nister, is a river in Rhineland-Palatinate, Germany. The Nister is a right tributary of the Sieg. It is 64 km (40 mi) long. Its source is in the Westerwald hills, near Willingen. It flows south of Bad Marienberg and north of Hachenburg. Near Wissen the Nister flows into the Sieg. It flows through the rocky upland region known as Kroppach Switzerland.

Roth is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, Germany.

Au (Sieg) station is a railway junction in the town of Au in the municipality of Windeck, which is in the German state of North Rhine-Westphalia. It lies on the Sieg Railway to Siegen, where the Engers–Au railway branches off to Altenkirchen, where it connects with the Upper Westerwald Railway (Oberwesterwaldbahn). Despite the town’s small population, the junction station is important for commuters from the districts of Altenkirchen, Neuwied and Westerwaldkreis for its connections towards Siegen, Cologne, Bonn, Düsseldorf and Aachen.

Seelbach bei Hamm is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, in western Germany. The Marienthal Abbey is located in the municipality.