Most of the Lubusz Land was transferred to Poland by the 1945 Potsdam Conference , while Germany retained areas west of the Oder-Neisse line including the historical capital Lebus as well as the towns of Fürstenwalde and Müllrose . In German '' Land Lebus '' denotes only a relatively small area of the wider historical land . Whereas Frankfurt upon Oder , founded later and under Marcher auspices , does not form part of the Lebus Land in German comprehension , its western and northwestern environs do , as much north as Letschin , west as far as Buckow in Marcher Switzerland and and from there , the southern frontier follows a line via Fürstenwalde to Müllrose
Potsdam Conference
Potsdam Conference
Lubusz Land