Today's Commercial Wharf originally extended from the inner harbor to Commercial Avenue until it was divided in 1868–1869 for the construction of Atlantic Avenue, at which time the mansard roof was added to the East Commercial Wharf. The strong facades of Quincy granite in the Greek Revival style are marked by variety in the use of masonry, rough-faced block for the basic structure to drafted stone for the window frames and cornice. Better known for the granite Tremont House (1827), the nation's and Boston's first hotel, Isaiah Rogers used brick and granite for the less public north facades of both sections. The conversions of the East and West Commercial Wharf to housing in the late 1960s and early 1970s added new entrances, windows, and balconies but maintained the general character of these former warehouse buildings.