The Milseburg is most notable, aside from being a landmark, for having been the site of an important Celtic oppidum. It was likely occupied from around 1200 to 800 BC and again from 450 BC to around the turn of the eras. The Ringwall (circular rampart) was one of the largest and most elevated in eastern Hesse. It originally had three gates, only one of which — the Tor am Kälberhutstein — was passable by wagons.