Architecture Terms – O

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Tall stone obalisk with ancient writing from the bottom to the top
Photo by Courtney Cook, via Unsplash
Obelisk

A tall, four-sided monolith (made of one large block of stone) with a pointed top.

Round glass window in the ceiling with the view of the blue sky
Photo by Nick Fewings, via Unsplash
Oculus Window

Round windows, openings, and skylights that are located at the top of a dome.

Ogee Arch
Photo by Aa Dil, via Pexels
Ogee Arch

A popular arch shape that consists of two ogee curves opposite of one another that was used frequently in late Middle Ages and England in the early fourteenth century.

Blue dome with white decor
Photo by Andreas Brunn, via Unsplash
Ornament

Any kind of decorative piece on a building that doesn’t have a structural purpose.