The balcony serves to enlarge the living space and range of activities possible in a dwelling without a garden or lawn. In many apartment houses the balcony is partly recessed to provide for both sunshine and shelter or shade.

Railings are used on stairs, balconies, galleries, decks, ramps, walkways and so on as a means of providing separation, support and safety. Railings can be made from a very wide range of materials: Wrought or cast iron. Stainless steel.