36 Breathtaking Churches Across the U.S. to Add to Your Bucket List

29. St. John's Abbey Church – A Brutalist Icon of Concrete and Light (Collegeville, Minnesota)

Prepare for a powerful encounter with modernist architecture at St. John's Abbey Church, designed by the renowned Marcel Breuer. Completed in 1961, this Benedictine monastery church is a masterpiece of Brutalism. Its massive, sculptural concrete bell banner dominates the entrance, while inside, a vast, trapezoidal space is illuminated by an incredible wall of hexagonal stained-glass windows – one of the largest in the world. It’s a space that feels both monumental and deeply spiritual, showcasing how modern materials can create sacred atmosphere.