architect karl moser envisioned a structure that stood flush with the street’s building line, with unpainted walls and large stained-glass windows that would fill the interior with light transformed into a maze of colour. the church is built entirely of in-situ reinforced concrete and its plan is a simple rectangle of remarkable size: 60 metres by 22 metres; the height also being 22 metres. the dimly lit, tunnel-like entrance area is a cleverly staged introit to the church’s long, bright interior. eight remarkably slim concrete columns carry a barrel-vault over the nave and a flat roof over the aisles, both of them coffered on structural and acoustic grounds. the choir is flat, closed off, and over-furnished; the mosaic cross put up later by hans stocker also seems out of scale. the opposite side, with the soloists podium and mighty organ, has a grid of fine concrete ribs.