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Title
Detail of decorated concrete Dome of the Pantheon, Rome, Italy with beam of sunlight shining through the central opening (oculus) #61475434
Description
Almost two thousand 2000 years old, the dome of the Pantheon, Rome, Italy is the largest unreinforced concrete dome in the world. Sunlight shines through the opening (oculus). The beam of sunlight moves across the walls of the Pantheon as the sun moves across the sky.