Jemeppe-sur-Sambre

Jemeppe-sur-Sambre (; ) is a Walloon municipality in Namur Province, Belgium. On 1 January 2006 the municipality had 17,990 inhabitants. The total area is 46.80 km², giving a population density of 384 inhabitants per km².
The area of the original municipality was closely based around the town of Jemeppe-sur-Sambre, until it was expanded during the post-1974 fusion of the Belgian municipalities, adding the "ancienne communes" (now villages) of Ham-sur-Sambre, Moustier-sur-Sambre, Spy, Mornimont, Balâtre, Onoz, and Saint-Martin.
The Spy Cave, among the most significant Paleolithic sites in Europe, is located in the municipality. The medieval Balâtre Castle is in the village of Balâtre, and Mielmont Castle is in Onoz.