The Albtalbahn is a railway line from Karlsruhe via Ettlingen to Bad Herrenalb with a branch line to Ittersbach, which originally continued to Pforzheim. Since it was linked to the Karlsruhe tram network, it has formed the cornerstone of the Karlsruhe light rail network and was a model for linking regional railway lines with urban tram systems in other European cities.
The Rhine-Main region is one of the warmest in the whole of Germany and so you can still go on excursions in nature in the Black Forest in autumn