The Tauber is a river in Franconia, Germany. It is a left tributary of the Main and is 132 km in length. The name derives from the Celtic word for water. It flows through Rothenburg ob der Tauber, Creglingen, Weikersheim, Bad Mergentheim, Königshofen, Tauberbischofsheim, and flows into the river Main in Wertheim am Main. The Tauber Valley Cy…The Tauber is a river in Franconia, Germany. It is a left tributary of the Main and is 132 km in length. The name derives from the Celtic word for water. It flows through Rothenburg ob der Tauber, Creglingen, Weikersheim, Bad Mergentheim, Königshofen, Tauberbischofsheim, and flows into the river Main in Wertheim am Main. The Tauber Valley Cycleway is a bicycle path which runs about 101 km along the course of the river.