The nomination of the Lower German Limes is scheduled for 2021. The German part of this TWHS includes 25 components, some of which have multiple locations. However, not much is left of the Limes section along the Lower Rhine today, only very few original remains are visible, most remains have been preserved underground. Hence it seems more than questionable whether the Lower German Limes could add anything significant to the already inscribed parts of the Frontiers of the Roman Empire.

The Dutch nomination website provides the entire nomination dossier including maps. Based on this information, I have identified the following locations of the German part, where original remains are visible:

-       Xanten Colonia Ulpia Traiana (CUT) (id 27), an archaeological park
-       Monheim Haus Bürgel (id 35), remains of the original walls are visible in walls of the later medieval and modern estate
-       Cologne Praetorium (id 37), the former Palace of the Roman govenor; remains are shown in an underground museum
-       Iversheim (id 43), remains of six lime kilns

I visited Xanten and Iversheim in summer 2020. The Praetorium in Cologne was closed due to construction works (until 2021), the area is being redesigned into an archaeological zone. And the Haus Bürgel didn’t seem worth the detour.

Xanten was once one of the largest and most important Roman settlements in the Germanic provinces. The archaeological park encompasses the boundaries of the historic Colonia Ulpia Traiana. It is a large but almost empty area. Near the main entrance, some buildings have been reconstructed: the city wall, an amphitheater, a Roman hostel and craftsmen's houses, as well as the ruins of an harbour temple (it's a bit strange to reconstruct a temple as a ruin, isn't it?). These reconstructions certainly serve their purpose of illustrating life in Roman times, but for a WH enthusiast only the original stuff counts, of course. And that is rather sparse in Xanten: a few excavated foundation walls and remnants of sewers and water pipes in the outdoor area. And most importantly, the foundations of the vestibule of the Great Baths, which can be visited in the basement of the Roman Museum. The museum isn't bad, but it displays more or less the same items as other Roman museums. In recent years I have visited quite a few of these local museums along the German Limes, so that I am no longer very enthusiastic about them.

The lime kilns in Iversheim were more interesting, although I wouldn't say the site is overwhelming or a must-see. The kilns are remains of an early industrial facility, operated by the Romans to produce quicklime from local dolomite. Quicklime is a major component of mortar, which was required in large quantities for stone buildings. The site is rather small: six kilns in a row, each about 3 meters in diameter (photo). Four kilns are covered by a protective building, a fifth kiln has been reconstructed and put into operation in order to recreate the burning process as it was in Roman times; the last one is not visible.
The site has limited opening hours, from May to October on weekends and public holidays. I spent a bit more time there than actually required for a proper visit. I had a nice conversation with two volunteers from the local historical association that runs the site. So far they rely on donations, but hopefully after inscription they will receive more support from the administrative authorities to further maintain the site and extend the opening hours.