In addition to the preparatory school, the abbey also established
Saint John's University, which was connected to the abbey by the "Quadrangle", at the time the largest building west of the
Mississippi River dedicated to education. Also located on the grounds of the abbey are the Collegeville Institute for Ecumenical and Cultural Research, the Episcopal House of Prayer (Diocese of Minnesota), the original
Minnesota Public Radio studio, and the Saint John the Baptist Parish Center. The grounds of the abbey comprise lakes, prairie, and hardwoods on a rolling glacial moraine, and have been designated
the Saint John's Arboretum. The abbey is the location of a number of structures designed by the modernist
Bauhaus architect
Marcel Breuer. The Abbey Church, with its banner bell tower, is one of his best-known works. The upper church houses the newly expanded Holtkamp Pasi organ with over 6,000 pipes. In its undercroft is a chapel that contains the relics of
Saint Peregrine. A
historic district of 17 buildings at Saint John's Abbey and University was listed on the
National Register of Historic Places in 1979 for having national significance in the themes of architecture, community planning and development, education, and religion. It was nominated for being an architecturally and historically significant campus of a leading religious and educational institution of the
Order of Saint Benedict. ==Publishing house==