In 1954, Bauhaus-trained architect Marcel Breuer designed St. John's Abbey Church in Minnesota. The Brutalist complex includes a concrete tower housing 5 bells which sound the hours and call the monastic community to prayer. Directly behind the bell tower, the honeycomb-shaped church facade is the largest wall of stained glass in the world, containing 430 colorful hexagons of abstract design. (Photo: St. John's Abbey Archive)