Rixensart is a Walloon municipality located in the Belgian province of Walloon Brabant. On January 1, 2006 Rixensart had a total population of 21,355. The total area is 17.54 km² which gives a population density of 1,217 inhabitants per km². The formerly separate municipalities of Genval and Rosières now form part of Rixensart. Genval-les-Bains is a local beauty spot, a 100-year old lake with a fountain, and framed by trees, houses and restaurants. Rixensart is served by two railway stations (at Rixensart and at Genval), connecting it with Brussels to the North and Louvain-la-Neuve to the South. Rixensart is twinned with Birstall, Leicestershire.