Blessed Sacrament Catholic Church - Sioux City, Iowa

Quatrefoil: ubiquitous in Gothic architecture, the quatrefoil symbolizes the four evangelists, as do the Winged Man (Matthew), Lion (Mark), Ox (Luke), and Eagle (John) -- the four beasts of Ezeckiel and the Apocalypse.
LINKS
Diocese Of Sioux City
The Globe
Sacred Heart Parish
Bishop Heelan Catholic Schools