Weissenfels vantage point (537 m), from which you have an unobstructed view of Bad Kreuznach and the entire Rhine-Main area and - as a local resident told me - you can see fireworks worth millions on New Year's Eve.
Definitely worth it in good weather. Straight on the Donnersberg, the Lemberg on the right and further into the Palatinate. On the left the Odenwald. Definitely worth a visit. And the Neupfalz with its beautiful playground is also worthwhile.