At 90 Brattle Street in Cambridge is a house, built in 1882-1883, that is considered to be the masterpiece of the Shingle style of architecture. With little exterior ornament and covered with wood shingles, it was designed by H. H. Richardson for Mary Fiske Stoughton, the mother of John Fiske, a philosopher and historian who later lived in the house. Although additions were made to the house in 1900 and 1925, it remains an icon of American architecture.