Celtic Ringwall of Otzenhausen
Built by the Treveri, a Celtic tribe settled in this area, as a fortress and fortified hill town in Celtic drystone technique - one of the mightiest Celtic ramparts in Europe.

The Celtic Ringwall of Otzenhausen was built by the Treveri, a Celtic tribe settled in this area, as a fortress and fortified hill town in Celtic drystone technique.
With walls once up to ten meters high, it counts among the most powerful surviving Celtic ramparts in Europe. Today the site sits within the Saar-Hunsrück Nature Park and can be explored on well-signposted walking trails, with a reconstructed Celtic village nearby.
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Attractions nearby

Saarbrücken
St. Arnual Dragon's Teeth (Westwall)
A 700-meter line of Westwall anti-tank obstacles on the Petersberg in Saarbrücken-St. Arnual - the final construction phase of 1940, now a listed monument.

Saarbrücken
The Burning Mountain near Dudweiler
Not really a mountain but a rocky ravine - a coal seam has been smoldering inside it for more than 300 years. Goethe visited the Burning Mountain in 1770.

Merzig
Dagstuhl Palace
A baroque palace of 1760 at the foot of the older Dagstuhl castle near Wadern, with a chapel holding a Stations of the Cross and a crypt. Since 1989 it has housed the Leibniz Center for Informatics.
