This Gothic church (1381) has a brick bell-tower in front of it, the bells of which were cast by Hemony. The church houses the vault tomb of the princes of the House of Orange. Inside, you will notice the coloured windows of the transept and the wide ambulatory. In the chancel, above the royal vault, stands the mausoleum of William the Silent: an imposing Renaissance edifice made of marble and black stone, the work of H. de Keyser (1621). From the top of the tower there is a beautiful panoramic view.