Secretary Adams Checks Underground Museum Construction, by Hofmeister, Richard K, 1984, Smithsonian Archives - History Div, In 1984, ninth Secretary Robert McCormick Adams, wearing a construction hat, checks the construction of the underground museum complex that now houses the National Museum of African Art, the Arthur M. Sackler Gallery and S. Dillon Ripley International Center. The complex opened three years later. The Smithsonian Institution Building, or "Castle", is visible in the background along with cranes and other construction machinery..