The Abbey of Saint Mary and Saint Louis is an abbey of the Roman Catholic English Benedictine Congregation (EBC) located in St. Louis County, Missouri USA. The Abbey is an important presence in the spiritual life of the Archdiocese of St. Louis. The monks of the Abbey live their faith according to the Benedictine discipline of 'prayer and work', praying the Divine Office five times daily, celebrating daily Masses in English and Latin, and working in the two parishes under their pastoral care and in the Saint Louis Priory School, which the Abbey runs as an apostolate. The Abbey and its school sit on a 150-acre (0.61 km²) campus in west St.