The word "walls" appears in the following articles by David Keuning:
Mark: Our father who art in Cologne (Peter Zumthor) (7)
Netherlands Institute for Sound and Vision: Introduction (6)
Frame: On goths & gables (FAT) (1)
Mark: Crumple zone (Manuelle Gautrand) (1)
Mark: Shopping Permitted (Foreign Office Architects) (1)
Netherlands Institute for Sound and Vision: Portrait (Edwin van Huis) (1)