Mount Saint Joseph in Waterville, Maine occupies an architecturally significant hilltop property overlooking the Kennebec River valley, chosen deliberately when the facility was established as a specialized medical institution for sick and injured children. The building was constructed during the late nineteenth century, when institutional care facilities increasingly adopted hilltop locations believing elevated terrain and fresh air provided therapeutic benefits for pediatric patients. The original Mount Saint Joseph children's hospital served the broader region for several decades, offering advanced medical care and recuperative treatment to young patients suffering from infectious diseases and respiratory conditions. The hospital's architectural design reflected institutional standards with ward spaces, isolation rooms, nursing stations, and medical treatment areas organized to facilitate efficient patient care. The building's numerous interconnected corridors and basement-level tunnel systems connected departmental spaces while serving daily operational needs including supply distribution and food delivery. The children's hospital operated successfully throughout the twentieth century until evolving medical practices and centralization of pediatric care within larger regional medical centers rendered specialized children's hospitals obsolete. Mount Saint Joseph was subsequently converted into a residential nursing facility designed to serve elderly and chronically ill patients requiring long-term institutional care. This transformation from acute pediatric hospital to geriatric nursing facility represented a dramatic shift in functional purpose, yet the physical structure and many interior architectural features remained substantially unaltered. The tunnel systems that facilitated supply distribution continued to traverse the building's subsurface levels, now serving nursing facility operational needs. The conversion involved minimal renovation of fundamental architectural features, leaving many spaces retaining characteristics of their original hospital configuration. Following its transformation into a nursing facility, Mount Saint Joseph developed a significant reputation as one of Maine's most actively haunted locations, with documented paranormal phenomena concentrated in areas historically serving pediatric functions. The most prominent manifestation involves the persistent apparition of a young girl approximately six to ten years old, wearing a distinctly purple dress suggesting the mid-twentieth century period. This child apparition has been witnessed repeatedly by nursing staff and residents throughout the facility's interior spaces, most frequently in patient care areas and residential rooms that once functioned as pediatric hospital wards. The girl's presence appears particularly active during nighttime hours, when her apparition has been observed moving through corridors, peering into resident rooms, and causing disturbances preventing sleep for current facility residents. The girl's behavior suggests she maintains awareness of the building's current use as a nursing home for elderly patients. Additionally, witnesses have reported hearing unexplained footsteps throughout the building's interior spaces, particularly in corridor areas and basement-level tunnel passages that connected departmental areas during the hospital's original operation. These footsteps appear to follow patterns consistent with daily institutional routines such as evening rounds or supply distribution activities. Shadow figures have been observed in tunnel passages, described as humanoid shapes moving with deliberate purpose but without clearly defined physical characteristics. Some researchers theorize the child apparition may represent a specific patient who died within the hospital during its pediatric period, supported by the girl's apparent emotional connection to the building. The tunnel passages and basement areas, which remain largely unmodified, appear to be zones of particular paranormal intensity, suggesting subsurface spaces retain powerful spiritual imprints from the institution's pediatric period. Mount Saint Joseph continues to operate as a nursing facility while maintaining its reputation as a location where the boundary between living and spiritual worlds remains distinctly permeable.