Both St. Joseph and St. Francis Xavier Church were designed by the firm of McCarthy, Smith and Eppig. St. Joseph's is Wilmette's oldest religious congregation, established in 1843. The present building (1939) is among the finest examples of Art Deco architecture on the North Shore. The interior is particularly well preserved and features Art Deco light fixtures and stained glass windows designed and fabricated by Giannini & Hilgart of Chicago. The altar floor and sanctuary wall contain Italian and French marble inlaid with Portuguese onyx. The Stations of the Cross are pastel-hued mosaics crafted in the Vatican Studio of Mosaics in Rome. The design and materials of the Y-shaped school designed by Herman J. Gaul of Chicago and constructed in 1934, and the adjacent rectory, harmonize with the church. St. Francis Xavier Church (1939) was designed in the Late Gothic Revival mode while McCarthy, Smith & Eppig were simultaneously working on St. Joseph's. The stained glass windows were made with English and German imported glass by the famed F. X. Zettler Studios of Munich and New York City. St Francis Xavier School (1924), just east of the church, is a unique modern blend of Gothic architecture by Chicago architect Barry Byrne.