Paintings, photographs, books and other memorabilia documenting the black experience in Alexandria, one of America’s major slave ports, are on display at this small resource center (enter from Wythe St). Pick up a brochure for self-guided walking tours of important Alexandria black-history sites. In the next-door annex, the Watson Reading Room has a wealth of books and documents on African American topics. Operated by the museum, the African American Heritage Park (Holland Lane) is worth a stop to see headstones from a 19th-century black cemetery.