▁Work ▁of ▁Fre ud ▁and ▁Kra ep elin ▁Updated ' '; ▁John ▁W iley ▁& ▁S ons . ▁ ▁Category : D ream ▁Category : Language <0x0A> </s> ▁The ▁Bos sche ▁School ▁was ▁a ▁traditional ist ▁movement ▁in ▁Dutch ▁architecture ▁which ▁was ▁strongly ▁based ▁on ▁numerical ▁relationships . ▁It ▁arose ▁from ▁the ▁Del ft ▁School ▁and ▁was ▁influ ential ▁primarily ▁on ▁the ▁design ▁of ▁Catholic ▁churches . ▁ ▁The ▁name ▁of ▁the ▁movement ▁came ▁from ▁the ▁three - year ▁Cour se ▁in ▁E cc les iast ical ▁Architecture ▁which ▁was ▁offered ▁from ▁ 1 9 4 6 ▁to ▁ 1 9 7 3 ▁in ▁the ▁Kru ith uis ▁in ▁' s - H ert ogen bos ch . ▁The ▁training ▁was ▁intended ▁to ▁guide ▁architect s ▁during ▁the ▁post - war ▁reconst ruction ▁of ▁churches . ▁The ▁leaders ▁were ▁Dom ▁Hans ▁van ▁der ▁La an , ▁his ▁brother ▁N ico ▁van ▁der ▁La an ▁and ▁C . ▁P ou der o yen . ▁ ▁Fe atures ▁ ▁A ▁notable ▁feature ▁of ▁the ▁Bos sche ▁School ▁is ▁the ▁so ber ▁design ▁of ▁the ▁buildings . ▁The ▁proport ions ▁in ▁particular ▁were ▁fixed ▁by ▁the ▁so - called ▁ ▁pl astic ▁number . ▁The ▁building ▁materials ▁used ▁were ▁princip ally ▁brick , ▁concrete ▁and ▁wood , ▁that ▁is ▁to ▁say , ▁the ▁materials ▁that ▁are ▁easily ▁available ▁in ▁the ▁Netherlands , ▁just ▁as ▁in ▁Italy , ▁for ▁example , ▁much ▁use ▁is ▁made ▁of ▁mar ble . ▁ ▁Their ▁churches ▁are ▁mostly ▁three - part