In the valley of the Blees, a tributary of the River Sûre, the ruins of this medieval castle stand atop a rocky promontory overlooking the picturesque village of Brandenbourg. The tour, complete with explanatory signs, starts at the tunnel running between the main castle (early 13C) and the lower courtyard. It then moves on to the chapel of the original castle, a few fine cellars and ends at the top of the keep, also part of the original structure (9C).