{{Short description|Former Roman Catholic seminary in Lloyd Harbor, New York, United States}} {{Infobox university | name = Seminary of the Immaculate Conception | image = | image_size = | image_alt = | caption = | latin_name = | other_name = <!-- or: | other_names = --> | former_name = <!-- or: | former_names = --> | motto = | motto_lang = | mottoeng = | established = {{start date|1926}} | closed = {{end date|2012}} (school) | type = Seminary | parent = | affiliation = | religious_affiliation = Roman Catholic Diocese of Rockville Centre (1957-2012)<br>Roman Catholic Diocese of Brooklyn (1926-1957) | academic_affiliation = | endowment = | budget = | rector = | students = | undergrad = | postgrad = | doctoral = | other = | address = 440 West Neck Road | city = Lloyd Harbor | state = New York | country = United States | coor = {{coord|40|54|18.2|N|73|28|15.5|W|display=title,inline}} | campus = | language = | free_label = | free = | colors = <!-- or: | colours = --> | website = {{URL|http://www.icseminary.edu}} | logo = | footnotes = }}

The '''Seminary of the Immaculate Conception''' was a Catholic seminary in Lloyd Harbor, New York, accredited by the Association of Theological Schools in the United States and Canada, and serving the Diocese of Rockville Centre. It offered a number of academic degrees, primarily those of Master of Divinity (MDiv) and Doctor of Ministry (DMin).

==History== The seminary was founded in 1926 in a house in Lloyd Harbor acquired by Thomas E. Molloy, Bishop of the Diocese of Brooklyn, which at that time covered all of Long Island. It was an expansion of the original school, St. John's Seminary, located in Brooklyn and staffed by the priests of the Congregation of the Mission as a part of their historic commitment to the education of the clergy of the Catholic Church. It began with 25 students studying at the collegiate level. The construction of the new building to house the seminary was completed in 1930 and classes were offered there in September of that year. The student body at that point was 85 seminarians in the two-year college level and the school of theology. In time, the property expanded to include Roland Ray Conklin's famous "Rosemary Farm" estate and amphitheater, which was built in 1907.

Due to the expanding population in the suburban counties of Nassau and Suffolk, in 1957 the Holy See separated them from the Diocese of Brooklyn. It established the Diocese of Rockville Centre to serve them. The two dioceses agreed to share the operation of the seminary. Ten years later the college level segment of the school was discontinued. With the changing needs of ministry in the Catholic Church in the following decades, new programs and degrees began to be offered.

In 1990, Rosemary Farm, under the ownership of the Seminary, suffered a significant fire after being abandoned, and was almost entirely torn down. The ruins, consisting of a doorway, the amphitheater, and the stable complex, have since been preserved.<ref>{{Cite web |title=Former Conklin Amphitheater On Seminary Land Restored – Huntington Historical Society |url=https://huntingtonhistoricalsociety.org/former-conklin-amphitheater-on-seminary-land-restored/ |access-date=2026-04-28 |language=en-US}}</ref>

=== Seminarian program ends === In November 2011, it was announced that the seminary would stop training new priests as of September 2012. Instead, the Diocese of Rockville Centre merged their seminary program with the Diocese of Brooklyn and the Archdiocese of New York at St. Joseph's Seminary in Yonkers.<ref> {{cite news |url=https://www.newsday.com/long-island/suffolk/catholic-seminary-in-huntington-to-close-i19913 |archive-url=https://web.archive.org/web/20111123094959/http://www.newsday.com/long-island/suffolk/catholic-seminary-in-huntington-to-close-1.3338508 |url-status=live |archive-date=November 23, 2011 |title=Catholic seminary in Huntington to close |work=Newsday |date=November 21, 2011 |first=Bart|last=Jones }}</ref> As of January 2024, the seminary continues to offer theological courses, including a master's degree in theology to the general public, as "a satellite campus of St. Joseph Seminary".<ref>{{Cite web |title=M.A. in Theology |url=https://www.icseminary.edu/ma-in-theology.html |access-date=2024-01-29 |website=SEMINARY OF THE IMMACULATE CONCEPTION |language=en}}</ref>

=== Library closure === The library continued to operate after the end of the seminarian theology program, but closed its doors on December 16, 2020.<ref>{{Cite web |last=Robinson |first=AuthorPam |date=2020-12-17 |title=Library at Immaculate Conception Seminary Closing |url=https://huntingtonnow.com/library-at-immaculate-conception-seminary-closing/ |access-date=2021-01-01 |website=HuntingtonNow.com |language=en-US}}</ref> It housed Catholic, Protestant, and theological texts and contains their own private archive of rare books.

== Current usage == The seminary building continues to host retreats for Catholic schools and colleges and other Catholic groups such as the Knights of Columbus.<ref>{{Cite web |title=Retreats |url=https://www.icseminary.edu/retreats.html |access-date=2024-01-29 |website=SEMINARY OF THE IMMACULATE CONCEPTION |language=en}}</ref>

== See also ==

* List of defunct colleges and universities in New York

==References== {{reflist}}

==External links== * [http://www.icseminary.edu/ Official website]

{{Roman Catholic Diocese of Rockville Centre|state=collapsed}}

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{{DEFAULTSORT:Immaculate Conception, Seminary of the}} Category:Defunct Catholic seminaries in the United States Category:Educational institutions established in 1928 Category:1928 establishments in New York (state) Category:Educational institutions disestablished in 2012 Category:2012 disestablishments in New York (state) Category:Defunct seminaries and theological colleges in New York (state)