What significant architectural feature does the Pantheon incorporate into its interior design?

The Pantheon is renowned for its innovative use of a coffered ceiling, which is one of its most significant architectural features. This design element consists of a series of sunken panels (coffers) that create a visually interesting pattern while also serving a practical purpose. The coffers reduce the weight of the massive concrete dome while still maintaining structural integrity. This technique not only showcases the engineering ingenuity of the time but also enhances the aesthetic appeal of the interior, drawing the eye upwards towards the oculus at the top of the dome. The interplay of light and shadow created by the coffered ceiling contributes to the overall grandeur of the Pantheon, making it a hallmark of Roman architectural achievement.