Ardennes river town wrapped by the Semois and watched over by a medieval castle.
Bouillon is a small town in the Belgian Ardennes, tucked into a deep loop of the Semois River. The landscape does most of the work: dense forest, steep valley walls, and a river that doubles back on itself so tightly that the old town sits on a narrow peninsula, almost entirely surrounded by water.
The town's main sight is its medieval castle, one of the best-preserved in Belgium. It occupies a dramatic ridge above the Semois, and the walk up earns you a proper view of the river bends and forested hills below. The castle is associated with Godfrey of Bouillon, the local duke who sold it to the Prince-Bishop of Liège in 1095 to finance his role in the First Crusade — and who went on to become the first ruler of the Kingdom of Jerusalem. Drawbridges, towers, and a dungeon are all intact.
Beyond the castle, Bouillon is good walking and cycling country. The Semois valley trails run through dense forest to the dramatic rocky viewpoints above the river's biggest meanders. The Musée Ducal fills in the history of Godfrey and the Duchy of Bouillon for those who want context. It is a quiet place — a long weekend base rather than a city destination — but if you're already in the Ardennes, it's worth the detour.
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Eating Out
Bouillon has a range of restaurants catering mainly to Belgian and Dutch weekend visitors, so standards are reasonable and portions are generous. Ardennes specialities are the thing to eat: sanglier (wild boar) in season, smoked Ardennes ham, trout from the Semois, and gibier (game) in autumn. The local bière artisanale from the Ardennes breweries is excellent.
Auberge d'Alsace near the castle is a reliable choice for traditional Belgian cooking. The restaurant terrace above the river at Hôtel de la Poste is the best location for lunch in summer. Most restaurants in Bouillon serve similar menus; quality is generally high because the town depends on visitors returning year after year.
Tip: come on a weekday or book ahead for summer weekends, when the town fills with Belgian families.
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Getting There
Bouillon has no railway station. By car, it is best reached from Liège (110km) or Luxembourg City (70km) via the E411 motorway to Neufchâteau and then south on smaller roads. From Brussels allow about two hours. The roads into the Semois valley are scenic but winding.
By bus, TEC operates services from Libramont railway station (35km north on the Brussels–Luxembourg line) into Bouillon, but services are infrequent. Most visitors arrive by car.
Cycle touring is a serious option: the Semois valley is well established on the Belgian cycling map and several long-distance routes pass through Bouillon, including the RAVeL network of traffic-free paths.
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When to Go
May to October is the main season. Summer brings the most visitors but also the most activities: kayaks, open-air concerts, and the castle's son-et-lumière shows on summer evenings. Spring and early autumn are quieter and arguably more pleasant — the forest walks are better without the July crowds and the light in September is exceptional.
The Ardennes winter is wet and grey, and some restaurants and accommodation close. But winter weekends can be peaceful, the castle is less crowded, and if it snows the valley looks extraordinary.
The Journées Godefroid (Godfrey's Days) festival in August features a medieval market, jousting, and historical re-enactments centred on the castle — a good spectacle and popular with families.
