A veranda or verandah (from Bengali baranda) is a roofed, open-air gallery or porch, attached to the outside of a building. A veranda is often partly enclosed by a railing and frequently extends across the front and sides of the structure.
Although the form "verandah" is correct and very common, some authorities prefer the version without an h (the Concise Oxford English Dictionary gives the h version as a variant and The Guardian Style Guide says "veranda not verandah").
The veranda has featured quite prominently in Australian vernacular architecture and first became widespread in colonial buildings during the 1850s. The Victorian Filigree architecture style is used by residential (particularly terraced houses in Australia and New Zealand) and commercial buildings (particularly hotels) across Australia and features decorative screens of wrought iron, cast iron "lace" or wood fretwork. The Queenslander is a style of residential construction in Queensland, Australia, which is adapted to subtropical climates and characterized by its large verandas.
The Creole townhouse in New Orleans, Louisiana, is also noted for its prominent use of verandas. In fact, most houses constructed in the Southern United States before the advent of air conditioning were built with a covered front porch or veranda.
Spanish Colonial architecture (as well as the "Mission style" revivalist version that became popular in the Western United States in the early 1900s) commonly incorporates verandas, both on the exterior of buildings and, in cases of buildings with courtyards, along the interior walls of courtyards. In some cases, homes were constructed with every room opening into a courtyard veranda, rather than interior corridors or direct connections to other rooms.