The Drina River is a significant waterway in the Balkans, flowing through Bosnia and Herzegovina and Serbia. It stretches approximately 346 kilometers (215 miles) and serves as a natural border between the two countries for part of its course. The river is known for its stunning landscapes, including steep cliffs and lush forests. The Drina is also important for local ecosystems and communities. It supports various wildlife and provides water for agriculture and hydroelectric power. The river is famous for its picturesque views, particularly the Mehmed Paša Sokolović Bridge, a UNESCO World Heritage site that attracts many visitors.