Opperzau is a community of the

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...

municipality

Windeck Windeck is a municipality in the Rhein-Sieg district, in North Rhine-Westphalia, Germany. It is situated on the river Sieg, approx. 35 km east of Bonn and 35 km west of Siegen. Many think the municipality is named after the ruined cast ...

, in the Rhein-Sieg district, in the south-eastern part of

North Rhine-Westphalia North Rhine-Westphalia (german: Nordrhein-Westfalen, ; li, Noordrien-Wesfale ; nds, Noordrhien-Westfalen; ksh, Noodrhing-Wäßßfaale), commonly shortened to NRW (), is a States of Germany, state (''Land'') in Western Germany. With more tha ...

. The southern part of Opperzau is named Oppertsau'','' which belongs to the municipality

Fürthen Fürthen is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, in western Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in ...

and belongs to

Rhineland-Palatinate Rhineland-Palatinate ( , ; german: link=no, Rheinland-Pfalz ; lb, Rheinland-Pfalz ; pfl, Rhoilond-Palz) is a western state of Germany. It covers and has about 4.05 million residents. It is the ninth largest and sixth most populous of the ...

. It is located at the middle of the

Sieg river The Sieg is a river in North Rhine-Westphalia and Rhineland-Palatinate, Germany. It is a right tributary of the Rhine. The river is named after the Sicambri. It is in length. The source is located in the Rothaargebirge mountains. From here t ...

History

In 1604, the ''

settlement Settlement may refer to: *Human settlement, a community where people live *Settlement (structural), the distortion or disruption of parts of a building * Closing (real estate), the final step in executing a real estate transaction *Settlement (fin ...

Siegburg Siegburg (i.e. ''fort on the Sieg river''; Ripuarian: ''Sieburch'') is a city in the district of Rhein-Sieg-Kreis in North Rhine-Westphalia, Germany. It is located on the banks of the rivers Sieg and Agger, 10 kilometres from the former seat of ...

(Siegburger Vergleich)'' clarified the limit of the current federal states North Rhine-Westphalia and Rhineland-Palatinate which leads through the village and parted them into ''Opperzau'' (northern part) and ''Oppertsau'' (southern part). The reason for this was a dispute of a

territorial sovereignty In the Holy Roman Empire, ''Landeshoheit'' or ''superioritas territorialis''Latin, sometimes ''ius territoriale''. (translated as territorial superiority, territorial supremacy or territorial sovereignty) was the authority possessed by the immedi ...

that started in 1294, when the County of

Sayn-Wittgenstein Sayn-Wittgenstein was a county of medieval Germany, located in the Sauerland of eastern North Rhine-Westphalia. History Sayn-Wittgenstein was created when Count Salentin of Sayn-Homburg, a member of the House of Sponheim, married the heiress Cou ...

and other small counties claimed possession over parts of

Berg Berg may refer to: People *Berg (surname), a surname (including a list of people with the name) *Berg Ng (born 1960), Hong Kong actor * Berg (footballer) (born 1989), Brazilian footballer Former states *Berg (state), county and duchy of the Holy ...

and the Sieg districts. Today, 200 meters of a road within the village mark the boundary between both federal counties, and have two different street names: for the Opperzau side and {{Lang, de, Siegstraße for the Oppertsau side.

Traffic

The roads 112 and 267 extend along Opperzau to other parts of the Altenkirchen district and to districts of

. The public transport is provided by the bus transport company Wilhelm Marenbach, which is headquartered in Opperzau. This bus line is designed only for school transport. Until 1993, Opperzau had a train stop, which is no longer used, due to a lack of passengers. Rhein-Sieg-Kreis