Karben is a town in the Wetteraukreis, in Hesse, Germany. It is situated on the banks of the river Nidda in the Rhein-Main-Gebiet, approximately …Karben is a town in the Wetteraukreis, in Hesse, Germany. It is situated on the banks of the river Nidda in the Rhein-Main-Gebiet, approximately 18 kilometres north of Frankfurt.