 The upper gatehouse, the only entrance to the inner bailey, was constructed in 1518, in part on older foundations.It is thought that this was the location of the 1330 "Arburghaus" which was destroyed in the fire.Above the doorway is a plaque dated 1596 combining the coats of arms of the Empire, the Canton of Bern and the von Erlach family, and naming "Anthoni von Erlach" as Landvogt.