If you're looking for some mental stimulation, pay a visit to Municipal Museum. Whether it's history, culture or beliefs, you'll find plenty of inspiring displays to keep your mind active here.
You'll have sightseeing choices galore when visiting Idstein. Municipal Museum is an ideal place to start here, but there are plenty of other interesting sights to experience. Rhein-Taunus Nature Park Information Centre, and Golfpark Idstein are close to the collection of historical artifacts and will top off your day nicely.