Explore details about location Square Jef Dillen - Jef Dillensquare. Square Jef Dillen - Jef Dillensquare is a location situated within the Anderlecht alongside other areas such as Avenue Chanoine Roose - Kanunnik Rooselaan, Rue du Potaerdenberg - Potaardenbergstraat, Rue Ernest Blerot - Ernest Blerotstraat.