The Pantheon here was built by the Emperor Haydrian in the 2nd century AD and its dome is still one of the largest concrete domes in the world. Its 50 yards across and its concrete is up to 20 feet thick.

• 万神殿是哈第安皇帝在公元2世纪时建立的,它的圆顶至今仍是世界上最大的混凝土圆顶之一。宽有50码,混凝土厚达20英尺。