 Offenbach was originally a linear village (by some definitions, a "thorpe") on the Glan’s left bank, near which a monastery had arisen in the Gölschbach valley.The village spread out to the west towards the monastery and also towards the east across to the Glan’s right bank, where the monastery’s mill, the "Klostermühle", stood.In 1906, the railway line began running between Dorfstraße ("Village Street") and the Glan, and in 1938, parallel to this, the approach road to what is today "Bundesstraße" 420.