The route from Philippeville to Mariembourg passes through villages typical of the Fenland region of Namur, notably Samart and Roly with its imposing castle-farm. The pretty local stone houses will leave you spellbound. Between oak forests and rolling meadows, you’ll wander along paths dotted with small nature reserves. Near the ruins of Dourbes castle, you’ll reach the Viroin, a wild river that marks the natural border between the Fen and Ardenne regions.