St. Hyacinth Basilica stands as a quintessential example of the Polish Cathedral style of architecture, prevalent among Polish diaspora communities in North America. Its grand edifice, with soaring spires and intricate facades, reflects the cultural heritage and religious devotion of Avondale's Polish immigrants.
Designed by the renowned architect Worthmann & Steinbach, who specialized in ecclesiastical architecture, the basilica was completed in 1921. The structure is adorned with elements typical of the Renaissance and Baroque periods, creating a visual dialogue between old-world splendor and the aspirations of its community in the New World.
The interior is equally striking, featuring stained glass windows that narrate biblical stories, enhancing a sense of belonging and identity among parishioners.