Bouillon, Medieval fortress town in Ardennes, Belgium.
Bouillon is a town in the Belgian Ardennes situated along the Semois River, with several villages spread across its territory. The castle sits on a rocky outcrop above the valley, and the town has grown around this natural stronghold.
The town served as an important stronghold from the 8th century onward and underwent major change in the 1600s when French forces took control. Following this conquest, it became an independent duchy with its own government.
Bouillon Castle dominates the townscape and draws visitors who want to see the steep stone walls rising above the river valley. The fortress remains the central landmark that defines how locals and travelers understand this place today.
Spring and fall are the best times to visit, when temperatures are comfortable and crowds are smaller. The town sits near the French border and paths along the Semois River are accessible for walking and exploring the riverside landscape.
The river forms a sharp loop around the town that once aided defense and still shapes how the place is laid out. This natural curve is so pronounced that it becomes especially visible from the heights surrounding Bouillon.
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