Dome

A dome is a rounded roof or ceiling that forms a half-sphere or hemisphere. It is a common architectural feature found in various styles and cultures throughout history. 

The dome's origins can be traced back to ancient civilizations like the Babylonians and Sumerians, who used corbelled domes in their temple structures. The Romans perfected dome construction with their iconic Pantheon, a massive domed building that remains a marvel of engineering. 

Domes can be classified based on their construction methods and shapes: 

• Corbelled Domes: These are formed by layers of stones or bricks that gradually overhang to create a dome shape. 
• Vaulted Domes: These are constructed using arches or vaults that intersect to form a domed roof. 
• Geodesic Domes: These are made up of triangular elements that are arranged in a geometric pattern to create a spherical shape. 

EXAMPLES IN CHICAGO:  

• The Adler Planetarium: This iconic building features a large, hemispherical dome that houses a planetarium projector. 
• Chicago Cultural Center: Built as the city’s first public library, the Cultural Center features 2 distinct domes: 
• Tiffany Dome: This is the larger and more famous of the two domes. Located in Preston Bradley Hall, it's a masterpiece of Tiffany glasswork. 
• The G.A.R. Hall Dome: This dome is located in the Grand Army of the Republic Hall, named after the Union veterans who fought in the Civil War. It's a smaller dome than the Tiffany Dome, but still quite impressive, featuring a beautiful Renaissance pattern in dark glass.