Marymount College, formally established in Tarrytown, New York, emerged during the educational expansion of the nineteenth and early twentieth centuries as a Roman Catholic institution dedicated to providing advanced learning for women. The college was founded by Father Gailhac, a French educator and priest whose pedagogical vision emphasized the integration of religious instruction with rigorous academic training. Mother Butler, another pivotal figure in the institution's early history, collaborated with Father Gailhac to establish what would become a significant center of Catholic learning in the Hudson Valley region. The campus, situated on substantial acreage overlooking the Hudson River, was designed to create both a physically imposing and spiritually nurturing environment for its students. The architecture reflected the aspirations of the era, with multiple academic buildings, dormitories, and ecclesiastical spaces constructed to serve the growing enrollment throughout the early twentieth century. During the college's operational decades, it fostered academic growth and religious formation, drawing students from across the Northeast. The institution maintained close ties to the Vincentian order through its founding figures, and the presence of clergy remained central to daily campus life and governance. Gailhac Hall and Gerard Hall emerged as significant structures on the property, serving primarily as residential spaces for students and faculty. The campus developed a comprehensive educational community that combined classical studies with spiritual development, reflecting the priorities of Catholic education during this period. The facilities expanded to meet increasing demand, and the institution became known for its commitment to educating young women within a religiously grounded academic framework. The college experienced shifting educational landscapes during the latter half of the twentieth century. Enrollment patterns changed, and eventually the institution underwent transformations in its operations and ownership structure. The property was subsequently repurposed as the EF Academy, an international educational facility, though much of the original infrastructure remained intact. The parking lot area and surrounding grounds retained the physical character of the original campus layout, even as the institutional mission evolved. These transitions marked a significant departure from the college's foundational purpose, yet the buildings themselves continued to stand as monuments to the institution's earlier era. Paranormal reports have emerged from multiple locations across the Marymount property, with witnesses describing phenomena that observers attribute to residual spiritual presence. Accounts from residents and staff members reference apparitions of figures believed to be Father Gailhac and Mother Butler, the college's founding visionaries. These spectral manifestations have been reported most frequently within Gailhac Hall and Gerard Hall, the dormitory structures that housed generations of students. Witnesses describe observing beds shaking without apparent physical cause, furniture shifting position, and unexplained flickering of electrical lighting. Disembodied voices have been documented in multiple dormitory areas, with visitors reporting hearing fragments of conversation or indistinct vocalizations. The phenomena appear concentrated in the residential spaces where spiritual figures once maintained their educational mission, suggesting a possible connection between the identities of the reported entities and their association with the institution's founding principles. The phenomena at Marymount have attracted attention from paranormal researchers and casual observers interested in understanding the nature of the reported manifestations. The combination of religious institutional history, the emotional significance of the educational mission, and the documented accounts has established the property within regional consciousness as a location of sustained paranormal interest. Whether viewed as genuine spiritual presence, environmental imprinting of historical significance, or products of psychological expectation, the reported phenomena continue to characterize discussions of the property's current status. The transition from active Catholic college to secular international academy has not diminished reports of unusual activity, suggesting that the historical resonance of the location maintains relevance in contemporary accounts. The Marymount property remains a source of ongoing interest within paranormal communities and serves as a case study in how institutional history and reported phenomena become intertwined in the cultural memory of educational spaces.