Bad Münster am Stein-Ebernburg is a charming resort town of small hotels and vacation rentals. It’s known for the Kurpark spa gardens, home to the art nouveau Kurmittelhaus, a mineral pool, and the Gradierwerk, a wall of trickling salt water that produces a therapeutic saline mist. The Rotenfels rock formation, with views of the Nahe River valley, and the centuries-old Rheingrafenstein castle ruins are nearby.