See if it's possible to attend a worship service at Ehemalige Synagoge. You'll learn about some of the traditions and practices of the Jewish faith.
This Jewish house of worship is one of the best free attractions in Bad Sobernheim. If you're in the mood to explore beyond Ehemalige Synagoge, also stop by Doennhoff Winery, Disibodenberger Kapelle St. Marien and Hexamer Winery.