The WNDC Museum is housed in a landmark nineteenth-century residence, originally built for Sarah Adams Whittemore, an opera singer and member of the distinguished Adams family of Massachusetts. The building, designed by Harvey Page, is informally called “the Whittemore House.” Significant interior features include the Arts and Crafts foyer and stairwell, and an elaborate plaster ceiling in the former music room, now the Hamlin Room. The WNDC Ballroom & Upstairs art galleries feature rotating exhibitions.