Two churches follow on to the south of the abbey: the Koorkerk, known as the choral church, is from the 14C. It has a nave and an apse and contains a 15C organ chest whose case was renewed in the 16C. As for the Nieuwe Kerk, in summer it hosts organ recitals. Up against the Koorkerk, stands the Lange Jan tower (85m). This is an octagonal stone construction from the 14C, crowned by a small 18C onion dome.