Roof lantern
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A roof lantern is a daylighting architectural element. Architectural lanterns are part of a larger roof and provide natural light into the space or room below. In contemporary use it is an architectur
The lantern over the dome of the Florence Baptistery, dated to 1150
A cupola-shaped lantern on 16th-century Seville Cathedral, Andalusia, Spain
The 6th-century Hagia Sophia's upper dome acts as a roof lantern
Roof lanterns were also used on some old barns for ventilation.
Cupola
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In architecture, a cupola is a relatively small, usually dome-like structure on top of a building often crowning a larger roof or dome. Cupolas often serve as a roof lantern to admit light and air or
Roof lantern
…for the roof lantern, in which the humble ceiling-window design of the skylight is elaborated into a miniature glass-paneled conservatory-style roof cupola or tower. Modern lanterns benefit from advances in glazing and sealing techniques, plus the development of high performance insulated glass and sealants…
Cupolas on the towers of Montefiascone Cathedral, Italy
White marble cupolas cap minarets at the Tomb of Jahangir in Lahore, Pakistan
The dome of Florence Cathedral with a roof lantern at the top
Interior of cupola ceiling in the old Synagogue of Győr, Hungary.