A bow window
, is a curved bay window
. Bow windows are designed to create space by projecting beyond the exterior wall of a building, and to provide a wider view of the garden or street outside, and typically combine four or more casement windows
, which join together to form an arch.
Bow windows first appeared in the eighteenth century in the United Kingdom, (and in the Federal period in the United States), and enjoyed a renewed popularity in the 1970s and 1980s.
White's Club, in St. James's Street, London features a famous bow window.