In mid-1895, the preparatory work for the Acher Valley Railway were completed and a year later final approval was given for its construction.

In the 1990s, the Rhine Valley Railway was straightened and it was moved about 100 metres to the west in the Achern area.

From the commencement of the 2004/2005 timetable on 12 December 2005, line S4 of the Karlsruhe Stadtbahn, which had ended at Rastatt, was extended via Baden-Baden and Buhl to Achern.

[4] The entrance building of Achern station was built in brick in the Rundbogenstil (Romanesque revival style) with terracotta ornaments.

The newly built building has a DB travel agency and a Schmitt&Hahn book shop.

The SWEG railcars take 18 minutes to reach Ottenhöfen on the Acher Valley Railway.