Mount St. Alphonsus Seminary

Mount St. Alphonsus Seminary (later Mount St. Alphonsus Retreat Center), located in Esopus, New York, was an American Roman Catholic seminary founded in 1907 by the Congregation of the Most Holy Redeemer, more commonly known as the Redemptorist Fathers and Brothers. It operated as a seminary until 1985, after which it became a center for meetings and spiritual retreats for the people of the Hudson Valley in New York. In 2012, the Mount ceased operations and was sold.

Upon the arrival of some Belgian Redemptorists in the United States in 1838, they began the mission work for which they had been established in Italy a century earlier by their founder, Alphonsus Maria de' Liguori, C.Ss.R., a bishop and noted spiritual writer, among the Native Americans who lived along the frontier of the young nation. By 1850, the nine Redemptorist communities in the United States were formed into the independent Province of Baltimore.

A seminary was soon opened in Maryland for the training of the young candidates to the Congregation. By the beginning of the 20th century, however, it was felt by the Redemptorists that the locales they had chosen for their seminarians had not been healthful. In 1904, with financing by the family of Father Augustine Duper, C.Ss.R., a native of the Bronx, the decision was made to move the seminary to Esopus, where they had purchased a 411-acre property. The main portion of the building was designed by William Licking, with the chapel being designed by Brother Max Monz, C.Ss.R.

Upon completion of construction in 1907, theological studies began to be given at the seminary for the young men of the province. The school also served as a locale for many activities of the local Catholic population. Additionally, the faculty provided spiritual care to their neighbors at a mission chapel in the town, as well as at one in the neighboring community of Port Ewen. They oversaw, as well, a small cloistered monastery of Redemptoristine nuns located on the grounds.

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