Over the years, patients with psychiatric disorders have been treated at various locations on the medical campus. Prior to 1943, patients with neurologic or psychiatric disorders were cared for on the general medicine units. In 1943, an inpatient service of 54 beds for patients with neurological or psychiatric disorders was opened in McMillan Hospital. In 1955, Renard Hospital, a 100-bed hospital dedicated to the care of psychiatrically ill patients, was opened. In 1981, psychiatric units in the East and West Pavilions of Barnes Hospital were opened with a bed capacity similar to Renard Hospital (i.e., about 100 patients beds). Renard Hospital was renovated to house the Department’s main administrative offices as well as research laboratories.