Northwest Regional style architecture is an architectural style popular in the Pacific Northwest between 1935 and 1960. It is a regional variant of the International style. It is defined by the extensive use of unpainted wood in both interiors and exteriors. Other features of the style include integration of the building with its setting through asymmetrical floor plans, extensive use of glass extending to the floor, a low-pitched or flat roof of shingles with overhanging eaves, and a minimum of decoration. It is sometimes known as Northwest Modern.