Frankfurt am Main is really the only city in Germany that has an international feel to it: The tallest buildings, the largest airport, and the most banks in continental Europe (including the European Central Bank). And the list of superlatives does not stop there; for example, there is the railroad station and the interstate intersection, both of which boast the highest volume of traffic in Germany. All this, despite the fact that the city has a mere 662,000 inhabitants and is not even the capital of Hesse. The elegant city of Wiesbaden has claim to that title. Otherwise the state of Hesse is rather unassuming, with a densely forested upland range of mountains, blessed with Riesling in the Rheingau region, and industry throughout. Opel in Rüsselsheim and VW near Kassel are the major industries, whereas ESA in Darmstadt is responsible for a large share of the European space program.