Architecture

A cupola is an ornamental structure placed on the top of a larger roof or dome. In some cases, the entire main roof of a tower or spire can be a cupola. More frequently, however, the cupola is a smaller structure that sets on top of the main roof.

Sometimes you can reach the cupola by climbing a stairway inside the building. This type of cupola is called a belvedere or a widow's walk. Some cupolas, called lanterns, have small windows that illuminate the areas below. Examples:

• The Cupola Collection
  Definitions, history, and photos, from the personal site of Howard Partridge.