This forest stretched along the lower Main from Aschaffenburg to Rüsselsheim and from Vilbel to the Neunkircher Höhe (heights) in the Odenwald. The oaktrees in many communities’ coats of arms in this area point to this origin. In the middle of this royal hunting forest in the 11th century rose Dreieichenhain, when the Lords of Hagen built a tower castle here in 1075.