Opened on 18 September 2009 in a town of some ten thousand people, the Triangel serves the German-speaking south of East Belgium as culture house, conference centre and trade-fair hall at once. Its Großer Saal takes more than 600 seated and up to 1,900 standing, so a conference in the morning and a symphony concert the same evening are an ordinary day there. Touring opera, theatre, rock and regional fairs use the one room, backed by a small hall, a two-storey foyer and three meeting rooms.