The Muskau Park is the largest and one of the most famous English gardens of Germany and Poland. Situated in the historic Upper Lusatia region, it covers 3.5 square kilometers of land in Poland and 2.1 km2 in Germany. The park extends on both sides of the Lusatian Neisse River, which constitutes the border between the countries. While Muskau Castle is situated west of the river, the heart of the park are the partially wooded raised areas on the east bank called The Park on Terraces. In 2003 a pedestrian bridge spanning the Neisse was rebuilt to connect both parts.
On July 2, 2004, UNESCO added the park to its World Heritage List, as an exemplary example of cross-border cultural collaboration between Poland and Germany. It was added to the list on two criteria: for breaking new ground in terms of development towards the ideal man-made landscape, and for its influence on the development of landscape architecture as a discipline.