How Romans Built the Dome of the Pantheon 🏛️ #shorts

3-Second Blueprint (English)

1. A widened 10 m dual-ring concrete foundation supports a 21.7 m rotunda where relieving arches direct loads onto eight piers.
2. A dense upper brick collar resists outward dome thrust while wooden frameworks and box molds form sunken square coffers.
3. Graded concrete layers—heavy brick below, porous stone mid-span, and volcanic pumice near the oculus—cut dome weight.