The Immaculata Seminary Historic District, commonly known as Tenley Campus, is an 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 purchased the site in part because of its proximity to Tenleytown station on the Red Line of the Washington Metro. It currently houses the school's Washington College of Law. The district reflects Tenleytown's evolution from a rural Washington County community to a densely-populated streetcar suburb, as well as the Catholic Church's role in education, particularly of women, during the twentieth century. It was added to the District of Columbia Inventory of Historic Sites in 2011 and the National Register of Historic Places in 2014. Development of the site that took place preceding the law school's move in 2016 preserved the existing character of outdoor spaces and incorporated historic structures, including Dunblane and the original 1905 A. O. Von Herbulis-designed seminary building, which has long stood prominently above passing traffic along Wisconsin Avenue. Geography Tenley Campus sits atop a knoll, fronting the western edge of Tenley Circle, at the intersection of Nebraska Avenue, Wisconsin Avenue, and Yuma Street NW in Northwest Washington, D.C.'s Tenleytown neighborhood. The eight-acre Tenley Campus is bounded by Yuma Street NW to the north; Warren Street NW to the south; Nebraska Avenue NW and Tenley Circle NW to the east; and 42nd Street NW to the west. The block to the north is mostly institutional in character. It contains St. Ann Catholic Church and its rectory, the former Convent de Bon Secours, Janney Elementary School, and the Tenley-Friendship Neighborhood Library, as well as the historic N. Webster Chappell House. The rest of the surrounding area is residential; American University Park is to the west, consisting almost entirely of single-family detached homes. American University's main campus is about half a mile away, at the intersection of Nebraska and Massachusetts Avenues. History