In 1924, the McCormick-Goodhart family erected an 18,000-square-foot (1,700 m2), 28-room Georgian Revival mansion, designed by architect George Oakley Totten Jr., at a cost of $100,000 that remains a community landmark on 15th Ave.[3] "Langley Park" references the 540-acre (2.2 km2) estate established in 1923, by the McCormick-Goodhart family in the Chillum District of Prince George's County, Maryland.

During the late-1940s and early 1950s, the estate was subdivided and developed as a planned community containing low-rise apartments, semi-detached and single family homes; and a major regional shopping area.

[2] The mansion was acquired in 1947 from the McCormick-Goodhart family by the Eudist Order for use as a seminary.

The mansion reopened in 2010 after a $13.8 million project as a multicultural service center operated by CASA of Maryland.

[5][6] This property was listed on the National Register of Historic Places on August 29, 2008.