 One of the oldest psychiatric treatment facilities in the country, landscape architect Frederick Law Olmsted, laid out the grounds as a park-like campus of 35 acres (14 ha).Today, it is part of Hartford Hospital and serves as a patient care, research and education facility in the fields of behavioral, psychiatric and addiction disorders.Engine Company 15 Fire Station of the Hartford Fire Department has been in its Fairfield Avenue location since it opened in 1909.