Spring Grove Hospital Center, formerly known as Spring Grove State Hospital, is a psychiatric hospital located in the Baltimore, Maryland suburb of Catonsville.Founded in 1797, Spring Grove Mental Hospital is the second oldest continuously operating psychiatric hospital in the United States. Today, the hospital operates 425 beds and has approximately 800 admissions and discharges a year. Service lines include adult and adolescent acute psychiatric admissions, long term inpatient care, medical-psychiatric hospitalization, forensic evaluation services, inpatient psychiatric research, and assisted living services. The facility is owned and operated by the State of Maryland and is the location of the Maryland Psychiatric Research Center which is renowned for its research into the causes of, and best treatments for, schizophrenia.History18th CenturyFounded in 1797, Spring Grove is the nation's second-oldest psychiatric hospital. Only the Eastern State Hospital which was founded in 1773 in Williamsburg, Virginia, is older. In its long history it has been variously known as The Baltimore Hospital, The Maryland Hospital, The Maryland Hospital for the Insane, and finally as The Spring Grove Hospital Center. Originally built as a hospital to care for Yellow Fever for the indigent away from the city, as the Maryland Hospital. In 1840 the hospital expanded to exclusively care for the mentally ill. In 1873, the buildings were torn down as the facility relocated to Sping Hill. The original site is now home to the Johns Hopkins Bloomberg School of Public Health.