Rappenburg

The Rappenburg is the remains of a medieval spur castle standing at 620 metres above sea level on a ridge north-east of Zimmerholz, a district of Engen in the Lake Constance region. The spur juts southwards from the main ridge, giving the site a commanding view over the surrounding countryside. Archaeologists believe the castle dates from the Middle Ages, though no written records of its existence survive. It was not the same fortress as the local Zimmerholz castle, which stood at the western edge of the village and whose lords appear in documents from 1251. The site’s name, Rappenburg, suggests a fortification linked to horses—Rappe means a dark-coated horse in German. The spur itself rises about 30 metres above the valley floor, making it a natural defensive position. Excavations in the 20th century uncovered traces of walls and a surrounding ditch, confirming the outline of the former stronghold. The lack of historical texts means the castle’s purpose and fate remain unclear. Visitors reach the site along a forest path that climbs from Zimmerholz to the ridge. The spur is now grassed over, with low stone foundations marking the former walls. From the southern tip there are wide views across the Hegau hills and towards the Alps on clear days. The area is quiet, with only the sound of wind in the trees and the occasional walker on the Burgenweg long-distance trail.