Most people pass Krefeld-Gellep without a second thought, because the view is dominated by the harbour of Uerdingen, chemical works and Rhine barges. Yet this is one of the most important Roman and early medieval sites on the Lower Rhine. The Roman fort here was called Gelduba, and it belongs to the Lower German Limes, the frontier along the river that UNESCO recognised in 2021. Tacitus mentions Gelduba in his account of the Batavian revolt of 69 and 70 AD, when legions and rebels fought around the camp, and archaeologists have found traces of that violence in the ground.
The bigger story is the cemetery. Around the fort grew one of the largest burial grounds north of the Alps, used from Roman times into the Frankish period, with thousands of graves excavated over the last century. The most famous is the rich burial of a Frankish noble with a gilded helmet, part of a treasure trove now displayed in the museum at Burg Linn in Krefeld. That museum, set in a moated castle a few kilometres away, is the best place to see what came out of the earth here, and the castle itself makes a fine stop.
As for riding, be honest with yourself: this is the flat, built-up Lower Rhine, where the road is about getting from one place to the next. Dikes, poplar rows, harbour cranes and industrial chimneys line the river, and the light can be beautiful in a melancholy, Dutch-painting way, especially when evening haze settles over the water. Wind sweeps across the plain unhindered, so a gusty day can feel more tiring than the distance suggests. The Rhine ferries in this area, where they run, give the trip some charm and are worth seeking out instead of the bridges.
Krefeld, the old silk town, is less than ten kilometres away and has everything you need: fuel, bike shops, restaurants and a Saturday market. Uerdingen has bakeries and snack bars close to the harbour. If you combine Gellep with other Limes points along the river, such as the fort at Moers-Asberg on the opposite bank or Xanten further downstream, the Roman frontier starts to come together as a line rather than a scatter of names. Allow time; the region rewards curiosity more than speed.