Diest is a city and municipality located in the Belgian province of Flemish Brabant. The municipality comprises the city of Diest proper and the towns of Deurne, Kaggevinne, Molenstede, Schaffen en Webbekom. On January 1, 2006, Diest had a total population of 22,845. The total area is 58.20 km² which gives a population density of 393 inhabitants per km².
The St. Sulpitius church is also located on the Grote Markt. Sie wurde zwischen 1417 und 1534 aus dem für die Demergotik typischen braunen Sandstein gebaut. It was from 1417 to 1534 from the Demergotik typical brown sandstone building. Der Chor ist bereits älter und datiert aus dem Jahr 1320 . The choir is already old and dated from the year 1320. In der Kirche befindet sich das Grab von Philipp von Oranien , der nach dem Tod seines Vaters Wilhelm I. von Oranien-Nassau Herr der Stadt gewesen war. In the church is the grave of Philip of Orange, after the death of his father, William I of Orange-Nassau Lord of the town had been.