Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Oder-Spree is a Kreis (district) in the eastern part of Brandenburg, Germany. Neighboring are (from north clockwise) the district Märkisch-Oderland, the district-free city Frankfurt (Oder), Poland, the district Spree-Neiße and Dahme-Spreewald, and the Bundesland Berlin. The district is named after the two major rivers in the district - the Spree river forms a large bend within the district; the Oder river constitutes the eastern border.