Map of Les citadelles mosanes
The coordinates shown for all tentative sites were produced as a community effort. They are not official and may change on inscription.
I visited Dinant several times and if I had to choose I'd always choose it over Namur, although the fortifications in Namur are worth visiting (perhaps not revisiting though). The highlight of my trip was to kayak there, passing by several fortifications.
Unfortunately we had already booked all the hotels for our tour of Belgium when the new TL of this country appeared on the Internet and we couldn't do anything to change radically our itinerary!!! This made me quite angry because the Tentative Lists often change only once every ten year and it had happened in the most inconvenient moment (and something similar already had happened before our tour of Spain!). However in the end we saw all the new sites but often too much badly, quickly and only some components of them.
This is the most typical case: we had the time only to view, even quite accidentally, the citadel of Namur, where we had booked a hotel, from the Pont de l'Évêché, in the late evening. Here we saw the impressive fortifications of the castle, the oldest part of the citadel with a watchtower standing out, high on a hill in front of us. Nothing else! Maybe in the future we will visit the citadel well, along with Dinant and Huy.