The tip of the rocky spur where the Sambre flows into the Meuse is the geographic and historical core of Namur, known to locals as Le Grognon ("the snout"). It was where the first settlement grew up, and excavations in the 2010s uncovered substantial Gallo-Roman remains beneath the modern paving.
The point itself has been turned into a small esplanade with the citadel rising directly above and the rivers meeting at your feet. It is the best place in the city for a clear view of how the geography shaped two thousand years of military history. The new pedestrian footbridge across the Sambre, Passerelle Léopold-Légia, gives a fine alternative view and connects to the cathedral side of town.