Oculus (architecture)
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An oculus is a circular opening in the center of a dome or in a wall. Originating in classical architecture, it is a feature of Byzantine and Neoclassical architecture.
Renaissance oculus on the west facade of the Cour Carrée of the Louvre Palace, with figures of war and peace, sculpted by Jean Goujon and designed by Pierre Lescot, 1548
An oeil-de-boeuf window of the Château de Chenonceau, France
An "œil de bœuf" window in Lyon (France)
An oeil-de-boeuf window in the Georgian Sutton Lodge in Sutton, London.
Window
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A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and sometimes allows the passage of sound and air. Modern windows are usually glazed, or covered in some othe
Alabaster "mullion"-divided decorative windows in Santa Maria La Major church (Morella, Spain)
Alabaster window in the Valencia Cathedral. Note the asymmetrical, slanted left side of the wall-frame, which lets sun rays reach the chancel.
Casement window
Awning window