Has a really neat bridge with stone, tower houses built on it! While not exactly on the Rhine, it is on the Lahn River just south of Bingen which is on the Rhine
Tourist information office in the Haus des Gastes, Kurhausstr.22-24, 55543 Bad Kreuznach
Tel. +49 671 8360050, Fax +49 671 8360080, info@bad-kreuznach-tourist.de
Tourist web page in English has highlights of the town and a downloadable map.