Erkner is a town in the Oder-Spree District of Brandenburg, Germany. It is situated on the river Spree, 23 km west of Fürstenwalde, and 25 km southeast of Berlin (centre). Oder-Spree is a Kreis (district) in the eastern part of Brandenburg, Germany. ... Brandenburg (Lower Sorbian: Bramborska; Upper Sorbian: Braniborska) is one of Germanys sixteen Bundesländer (federal states) and lies in the east of the country. ... The Spree (Slavic Å preva or Å preja, older form Sprevja, Sorbish Sprowja) is a river in Saxony, Brandenburg and Berlin, Germany. ... ... This article is about Germanys largest city. ...