Burg Ringsheim, Moated castle in Euskirchen, Germany

Burg Ringsheim, also called Schloss Ringsheim, stands east of Flamersheim in Euskirchen. Its 18th-century rubble-stone mansion sits on the walled medieval main castle, with inner bailey buildings from the 19th century attached to 13th-century walls with towers. Only remnants of walls and towers survive from the outer bailey.

Burg Ringsheim was first mentioned in 1249, when it was destroyed; it was a Cologne fief held by the Lords of Ringsheim, strategically placed between the Flamersheim forest and the Aachen–Frankfurt military road. In 1455 the family sold its ancestral seat to Johann Hurth von Schoeneck, hereditary marshal of Jülich, because of debts. After the last Hurth von Schöneck died, the archbishop reclaimed the fief and granted it again in 1635 to Johann Freiherr von Beck.

The name Ringsheim comes from the village of the same name that surrounded the castle and was abandoned in the 17th century; it does not describe a circular layout. The castle was a Cologne fief held by the Lords of Ringsheim, who also owned a house monastery in Schweinheim and castles in Flamersheim and Lindweiler. The site is privately occupied and not open to visitors.

The property sits east of Flamersheim district and remains in private hands as a residence. Visitors can view the exterior from public pathways but should not enter the grounds.

The church ruin inside the inner bailey is all that remains of Ringsheim village, which was abandoned in the 17th century; the castle itself takes its name from that lost settlement. The 19th-century economic yard was built against the ruin.