he Hackteufel is a restaurant with a long tradition located in the Steingasse; it was mentioned in a document for the first time in the 16th century and renamed the „Gasthof Grüner Baum“ („Green Tree Inn”) in 1836. In 1954 it was acquired by the Scholl family and completely renovated. The following year the restaurant was reopened, and in 1959 the Hotel of the "Hackteufel" Inn opened its doors to the public.

Before the dam at Karlstor (Karl´s Gate) was built the “Hackteufel” was the name of a narrow passage at this spot in the Neckar Valley where raging currents and submerged rocks made life difficult for fishermen and navigators. As one legend says, if a ship went under, it was because a demon (the “Hackteufel”) was hooking down men and ship into the churning depths of the Neckar. The street on the Neckar between the Karlstor (Karl´s Gate) and the Alte Brücke (Old Bridge) was named the Hackteufel in memory of this legend.