Bad Ems is a spa town located in the state of Rhineland-Palatinate, Germany, known for its hot springs and mineral baths. The town is situated on the banks of the Lahn River and has a rich history dating back to Roman times. It was a popular destination for European royalty and aristocracy in the 19th century, including Queen Victoria of England and Emperor Wilhelm II of Germany.

The town's hot springs and mineral baths have been known for their therapeutic benefits for centuries. The water is rich in minerals such as calcium, magnesium, and sulfate, which are believed to have healing properties. The town's Kurhaus, built in the 19th century, is a grand building that serves as a spa and convention center. Visitors can enjoy a variety of spa treatments, including massages, hydrotherapy, and mineral baths.

In addition to its spas, Bad Ems has several historic buildings and landmarks, including the Russian Orthodox Church, which was built in the 19th century for Russian visitors to the town. The town also has a casino, which has been in operation since the mid-19th century.

Bad Ems is located in the scenic Lahn Valley, which offers opportunities for outdoor activities such as hiking, cycling, and boating. The town is also within easy reach of other attractions in the region, including the medieval town of Limburg an der Lahn, the Burg Eltz castle, and the Rhine River Valley.