Lusatian Highlands in the context of "Lusatian Mountains"

The Spree (/ʃpreɪ, spreɪ/ S(H)PRAY, German: [ʃpʁeː] ; Sorbian languages: Sprjewja, Lower Sorbian: [ˈsprʲɛwʲa], Upper Sorbian: [ˈspʁʲɛwʲa]; in Lower Sorbian also called Rěka) is a river in Germany and the Czech Republic. With a length of approximately 400 kilometres (250 mi), it is the main tributary of the Havel River. The Spree is much longer than the Havel, which it flows into at Berlin-Spandau; the Havel then flows into the Elbe at Havelberg. The river rises in the Lusatian Highlands, in the Lusatian part of Saxony, where it has three sources: the historical one called Spreeborn in the village of Spreedorf [de], the water-richest one in Neugersdorf, and the highest elevated one in Eibau. The Spree then flows northwards through Upper and Lower Lusatia, where it crosses the border between Saxony and Brandenburg. After passing through Cottbus, it forms the Spree Forest (German: Spreewald), a large inland delta and biosphere reserve. It then flows through Lake Schwielochsee before entering Berlin, as Müggelspree [de] (pronounced [ˈmʏɡl̩ˌʃpʁeː] ).

The Spree is the main river of Berlin, Brandenburg, Lusatia, and the settlement area of the Sorbs, who call the river Sprjewja; the name derives ultimately from Proto-Germanic *spreutaną "to spring forth". For a very short distance close to its sources, the Spree constitutes, as Spréva, the border between Germany and the Czech Republic. The Spree's longest tributaries are Dahme (confluence in Berlin-Köpenick) and Schwarzer Schöps (Čorny Šepc; confluence in Boxberg/O.L.-Sprey [de]), other well-known tributaries (since they are Berlin rivers) are Panke and Wuhle.

Bautzen (German pronunciation: [ˈbaʊtsn̩] ) or Budyšin (Upper Sorbian pronunciation: [ˈbudɨʃin] ), until 1868 Budissin in German, is a town in eastern Saxony, Germany, and the administrative centre of the district of Bautzen. It is located on the Spree river, is the eighth most populous town in Saxony, and is the seat of Saxony's largest district. Bautzen lies in the bilingual Sorbian settlement area (Serbski sydlenski rum) of Lusatia, and is Lusatia's third-largest town after Cottbus and Görlitz, as well as the second-largest town in Upper Lusatia.

The town lies in the hilly Upper Lusatian Gefilde (Hornjołužiske hona), a part of the northwesternmost foothills of the Sudetes, just north of the Lusatian Highlands. Bautzen is the first larger town on the Spree River (Spree→ Havel→ Elbe→ North Sea), and the Bautzen Reservoir (Budyska rěčna zawěra) lies in the north of the town. In 2021, Bautzen had a population of around 38,000.

The Spree (/ʃpreɪ, spreɪ/ S(H)PRAY, German: [ʃpʁeː] ; Sorbian languages: Sprjewja, Lower Sorbian: [ˈsprʲɛwʲa], Upper Sorbian: [ˈspʁʲɛwʲa]; in Lower Sorbian also called Rěka) is a river in Germany and the Czech Republic. With a length of approximately 400 kilometres (250 mi), it is the main tributary of the Havel River. The Spree is much longer than the Havel, which it flows into at Berlin-Spandau; the Havel then flows into the Elbe at Havelberg. The river rises in the Lusatian Highlands, in the Lusatian part of Saxony, where it has three sources: the historical one called Spreeborn in the village of Spreedorf (de), the water-richest one in Neugersdorf, and the highest elevated one in Eibau. The Spree then flows northwards through Upper and Lower Lusatia, where it crosses the border between Saxony and Brandenburg. After passing through Cottbus, it forms the Spree Forest (German: Spreewald), a large inland delta and biosphere reserve. It then flows through Lake Schwielochsee before entering Berlin, as Müggelspree (de) (pronounced [ˈmʏɡl̩ˌʃpʁeː] ).

The Spree is the main river of Berlin, Brandenburg, Lusatia, and the settlement area of the Sorbs, who call the river Sprjewja; the name derives ultimately from Proto-Germanic *spreutaną "to spring forth". For a very short distance close to its sources, the Spree constitutes, as Spréva, the border between Germany and the Czech Republic. The Spree's longest tributaries are Dahme (confluence in Berlin-Köpenick) and Schwarzer Schöps (Čorny Šepc; confluence in Boxberg/O.L.-Sprey (de)), other well-known tributaries (since they are Berlin rivers) are Panke and Wuhle.