Nearly all of Hesse is a hilly, agricultural land, heavily forested in parts. It has the Odenwald hills and the Taunus range and is drained by the Rhine, Main, Lahn, Eder, and Fulda rivers. Grain, potatoes, and fruit are grown, and cattle are raised there. Along the beautiful Rhine valley some of the finest German wines are produced. Industry is centered in the Frankfurt area and at Kassel, Wiesbaden, and Darmstadt. The chief manufactures include textiles, chemicals, machinery, and metal goods, as well as electrical products and scientific instruments. In recent years eastern European immigrants have sparked a number of small industries, including glass, toy, and musical-instrument manufactures. Wiesbaden, Bad Homburg, and Bad Nauheim are among numerous health resorts of Hesse. Frankfurt, Marburg, Giessen, and Darmstadt have noted universities.