BACHARACH, town, Rhenish Prussia, Germany, on left bank of Rhine, 3om. above Coblenz. Pop. , 1,853. The ruins of town walls and St. Werner's (Gothic, 13th century) church are well-known. St. Peter's is an interesting late Roman esque (early 13th century) basilica. The castle of Stahleck above the town belonged, with those of Fiirstenberg and Stahlberg, to the counts palatine. Bacharach was a famous wine-staple till the 16th century and is still an important market for Rhenish wine.