WEIMAR, a town of Upper Saxony, and in the territory of Thuringia, with a magnificent castle, wherein the duke resides. It is seated on the river Ilm, 20 miles north-east of Erfurt, and ten west of Jena. It is the capital of the duchy of Sax-Weimar. E. Long. 11. 18. N. Lat. 50. 10.