Introduction to the dome: The giant dome of the Pantheon is one of the masterpieces of Roman construction. The dome is inlaid with grates and has a diameter of 44.4 meters, which is equal to the height of the temple. There is a circle with a diameter of 8.3 meters in the center of the dome. hole, and until 1960 it was the largest freestanding dome in the world.
The round hole at the top of the dome is the product of Emperor Hadrian's whimsy. It is the only source of light in the entire Pantheon. On clear days, sunlight passes through here and shines on the marble walls of the temple. ; At night, standing in the temple, you can look up at the starry sky above the circular hole, making the Pantheon look solemn and religious.