A bungalow is a type of building. Across the world, the meaning of the word bungalow varies. Common features of many bungalows include verandas and being low-rise. In Australia, the California bungalow was popular after the First World War. In Britain and North America a bungalow today is a residential building, normally detached, which is either single-story or has a second story built into a sloping roof, usually with dormer windows (one-and-a-half stories). Full vertical walls are therefore only seen on one story, at least on the front and rear elevations. Usually the buildings are relatively small, especially from recent decades; although, early examples may be large, in which case the term bungalow tends not to be used today.