The Immaculata Seminary Historic District, commonly known as Tenley Campus, is an 8.2-acre (3.3 ha) parcel of land, located off of Tenley Circle in the Northwest Washington, D.C. neighborhood of Tenleytown. The site of Dunblane, an early to mid-nineteenth-century Federal/Greek Revival-style manor house, it was once part of a large country estate on the outskirts of the capital city, owned by a succession of prominent Georgetown residents. From 1904 to 1906, the land was acquired by the Catholic Sisters of Providence of Saint Mary-of-the-Woods, who, for decades, operated all-girls primary, secondary, and postsecondary schools there under the Immaculata name, before being forced to shutter due to financial issues. Since 1986, it has been a satellite campus of American University, which purch