On the ridge called "Castellberg" above Wallendorf, near where the Our flows into the Sauer, the Celtic Treveri built a fortified settlement similar to a town in the 2nd century BC. Today, almost nothing of it is visible above ground.
The "Waleswilere" museum is located in the "Haus des Gastes" and houses numerous finds from the Roman villa on the Hüttenberg, but also many loans and gifts from private collectors.