Dagstuhl Castle is a ruined castle on the top of a hill near the town of Wadern, kreis Merzig-Wadern, in Saarland, Germany. It overlooks the newer Schloss Dagstuhl in the valley below, which is historic but has been converted for use as a meeting centre for computer science.
The castle was founded by Knight Boemund of Saarbrücken sometime before 1290, probably for Bohemond I von Warnesberg, Archbishop of Trier. The name derives from the German word for roof, "Dach", because of the roof-like shape of the hill on which the castle stands.The castle ruins have been archaeologically explored and were improved for public access in 2004.
Address (Unnamed Road), Wadern 66687, Germany
Coordinates 49°31'52.766" N 6°53'47.67" E