Berka, a town and watering-place of Germany, in the grand-duchy of Saxe-Weimar, on the Ilm and the Weimar-Kranichfeld railway, 8 m. S. of Weimar. Pop. 2300. It has sulphur baths, which are largely frequented in the summer. Berka was once celebrated for its Cistercian nunnery, founded in 1251. Two m. down the Ilm is the curious castle of Burgfarth, partly hewn out of the solid rock.