The Isar is a river in southern Germany, primarily flowing through the city of Munich. It is approximately 295 kilometers long and is a tributary of the Danube River. The Isar is known for its clear waters and scenic landscapes, making it a popular spot for outdoor activities like cycling, hiking, and swimming. The river has historical significance, as it has been a vital waterway since ancient times. It also plays a crucial role in the region's ecology, supporting various wildlife and plant species. The Isar is an essential part of the local culture, with parks and recreational areas lining its banks.