Brandenburg, officially the State of Brandenburg, is a state in the northeast of Germany bordering the states of Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony, as well as the country of Poland. With an area of 29,480 square kilometres and a population of 2.5 million residents, it is the fifth-largest German state by area and the tenth-most populous. Potsdam is the state capital and largest city, and other major towns are Cottbus, Brandenburg an der Havel and Frankfurt (Oder).
Lower Silesian Voivodeship, or Lower Silesia Province, in southwestern Poland, is one of the 16 voivodeships (provinces) into which Poland is divided. The voivodeship was created on 1 January 1999 out of the former Wrocław, Legnica, Wałbrzych and Jelenia Góra Voivodeships, following the Polish local government reforms adopted in 1998. It covers an area of 19,946 square kilometres (7,701 sq mi), and as of 2019 has a total population of 2,899,986.
The Moravian-Silesian Region is one of the 14 administrative regions of the Czech Republic. Before May 2001, it was called the Ostrava Region. The region is located in the north-eastern part of its historical region of Moravia and in most of the Czech part of the historical region of Silesia. The region borders the Olomouc Region to the west and the Zlín Region to the south. It also borders two other countries – Poland to the north and Slovakia to the east.
Schwedt is a town in Brandenburg, in northeastern Germany. With the official status of a Große kreisangehörige Stadt, it is the largest town of the Uckermark district, located near the river Oder, which forms the border with Poland.
West Oder is the western arm of the lower Oder near Szczecin, Poland along the border with Germany. It flows into the Oder Lagoon.
Lower Lusatia is a historical region in Central Europe, stretching from the southeast of the German state of Brandenburg to the southwest of Lubusz Voivodeship in Poland. Like adjacent Upper Lusatia in the south, Lower Lusatia is a settlement area of the West Slavic Sorbs whose endangered Lower Sorbian language is related to Upper Sorbian and Polish.
Tyresta National Park is a national park with a surrounding nature reserve in Sweden, located in Haninge and Tyresö municipalities in Stockholm County.
Lower Silesia is the northwestern part of the historical and geographical region of Silesia; Upper Silesia is to the southeast.
Kostrzyn nad Odrą is a town in Gorzów County, Lubusz Voivodeship in western Poland, close to the border with Germany.
The Warta Mouth National Park is the youngest of Poland's 23 national parks. It was created on 19 June 2001 in the region of the lowest stretch of the Warta river, up to its confluence with the Odra (Oder), which marks the Polish–German border. The park covers an area of 80.38 square kilometres (31.03 sq mi) within Lubusz Voivodeship.
Gmina Gryfino is an urban-rural gmina in Gryfino County, West Pomeranian Voivodeship, in north-western Poland, on the German border. Its seat is the town of Gryfino, which lies approximately 20 kilometres (12 mi) south of the regional capital Szczecin.
Gmina Chojna is an urban-rural gmina in Gryfino County, West Pomeranian Voivodeship, in north-western Poland, on the German border. Its seat is the town of Chojna, which lies approximately 32 kilometres (20 mi) south of Gryfino and 52 km (32 mi) south of the regional capital Szczecin.
The Lower Oder Valley International Park is a shared German-Polish nature reserve. It comprises the western banks of the Oder river within the Uckermark district in the German state of Brandenburg as well as the steep eastern banks in the Gryfino and Police counties of the Polish West Pomeranian Voivodeship further north.
Lower Odra Valley Landscape Park is a designated Polish Landscape Park protected area, located in West Pomeranian Voivodeship of northwestern Poland.
Cedynia Landscape Park is a protected area in north-western Poland, bordering Germany. It was established on 1 April 1993, by order of the governor (voivode) of the then Szczecin Voivodeship. The Park covers an area of 308.5 square kilometres (119.1 sq mi). It also has a buffer zone (otulina) covering 531.2 square kilometres (205.1 sq mi).
Rąpice is a village in the administrative district of Gmina Cybinka, within Słubice County, Lubusz Voivodeship, in western Poland, close to the German border. It lies approximately 11 kilometres (7 mi) south-west of Cybinka, 29 km (18 mi) south-east of Słubice, 57 km (35 mi) west of Zielona Góra, and 77 km (48 mi) south-west of Gorzów Wielkopolski. It is located within the historic Lubusz Land.
The Oder is a river in Central Europe. It is Poland's second-longest river in total length and third-longest within its borders after the Vistula and Warta. The Oder rises in the Czech Republic and flows 742 kilometres (461 mi) through western Poland, later forming 187 kilometres (116 mi) of the border between Poland and Germany as part of the Oder–Neisse line. The river ultimately flows into the Szczecin Lagoon north of Szczecin and then into three branches that empty into the Bay of Pomerania of the Baltic Sea.
Poland is a country that extends across the North European Plain from the Sudetes and Carpathian Mountains in the south to the sandy beaches of the Baltic Sea in the north. Poland is the fifth-most populous country of the European Union and the ninth-largest country in Europe by area. The territory of Poland covers approximately 312,696 km2 (120,733 sq mi), of which 98.52% is land and 1.48% is water. The Polish coastline was estimated at 770 km (478 mi) in length. Poland's highest point is Mount Rysy, at 2,501 m (8,205 ft).
During the summer of 2022, a mass mortality event involving fish, beavers, clams, crayfish and other wildlife occurred in the Oder river.
View from Krajnik Dolny on the Polish side of the border
Winter on the River Oder near Krajnik Dolny
Concrete slab path in Lower Oder Valley National Park near Schwedt
Brandenburg, Germany 
