The Duchy of Saxe-Weimar-Eisenach was a historical state in Germany, part of the larger region known as Thuringia. It was established in the early 19th century and existed until the end of the German monarchy in 1918. The duchy was formed from the division of the Saxe-Weimar territory and included the cities of Weimar and Eisenach. The duchy was known for its cultural contributions, particularly during the Weimar Classicism period, which included notable figures like Johann Wolfgang von Goethe and Friedrich Schiller. The region played a significant role in the development of German literature and arts, making it an important cultural center in Europe.