Arlon is a city and municipality of Wallonia, and the capital of the province of Luxembourg in the Ardennes, Belgium. With a population of just over 28,000, it is the smallest provincial capital in Belgium. Arlon is also the capital of its cultural region: the Arelerland. The municipality consists of the following sub-municipalities: Arlon proper, Autelbas, Bonnert, Guirsch, Heinsch, and Toernich.