Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Oberbergischer Kreis is a Kreis (district) in the state of North Rhine-Westphalia, Germany. Neighboring districts are Ennepe-Ruhr, Märkischer Kreis, Olpe, Altenkirchen, Rhein-Sieg, Rheinisch-Bergischer Kreis, and the urban districts Remscheid and Wuppertal. The area of the Bergisches Land belonged to the County of Berg for most of the medieval times, which still gives the district its name. What is called "Oberbergisch" (''upper Bergian'') lies in the southeast of that earldom: Already in 1740, a description of what had meanwhile become a duchy made a distinction between the "Niederbergisch" part north of the river Wupper and the "Oberbergisch" to its south.