The Neisse River is a river in Central Europe that flows through Germany and Poland. It is approximately 250 kilometers long and serves as part of the border between the two countries. The river originates in the Jizera Mountains and eventually joins the Oder River, which flows into the Baltic Sea. The Neisse River is divided into two main sections: the Nysa Kłodzka in Poland and the Nysa Łużycka in Germany. It is known for its scenic landscapes and is a popular destination for outdoor activities such as hiking and cycling. The river also plays a role in local ecosystems and supports various wildlife.