Limburg an der Lahn in Hessen, Central Germany lies between the Taunus and the Westerwald on the river Lahn. The nearest major cities are Wetzlar, Gießen, Wiesbaden, Frankfurt, and Koblenz. In about 800 AD, the first castle buildings arose on the Limburg crags. In 1150, a wooden bridge was built across the Lahn. The long-distance road from Cologne to Frankfurt/Main subsequently ran through Limburg.