The Taunus is a small mountain range approx. 30 minutes away from Frankfurt. You can reach the top, which is called the Feldberg (881,5m above sea level), either via bus or with your car. For a short sightseeing, I recommend that you drop your car at one of the public parking areas and you hike to the top. Parking is for free and depending on your fitness level you can choose a parking which suits your condition (from 2 minutes to 1,5 hours). Of course there are also several mountain bike trails. In summer the Feldberg is the place to be for all motorcyclists to show off with their bikes.
There is a restaurant called Feldberghof (www.feldberghof.de) which offers a great scenic view over the Rhein-Main area. The restaurant has the charm of a ski chalet inside. The menu is written in the typical hessian (county) dialect. You will find a classic selection of typical German food. The quality is average, prices are decent. Oh..and by the way this restaurant is also a hotel and a civil registry office (you can actually marry on the top of the Taunus).
For the current weather situation, please check the webcam: http://bit.ly/8FhHOa
Check out these winter moods:
