In the community forest of Herforst, the so-called "Arenberg Forest", there are still remains of this wall as a 1 m-high stone wall with original foundations.
The Roman ``Langmauer`` of Butzweiler is a reconstruction. The wall had an original length of 72 km, a thickness of 80 cm and a height of 2 meters. The original wall was built end of the 4C.
The nearly 700 year-old water castle is located three kilometers north of Bitburg in Rittersdorf. It houses in the Gothic Knights' Hall, the registrar's office (branch) of the District Administration of the Bitburg region.