Ancient Dome

Yes, we visit the other worldly Pantheon whose 4,535 metric tons weight of the Roman concrete dome is concentrated on a ring of voussoirs 9.1 metres in diameter that form the oculus, while the downward thrust of the dome is carried by eight barrel valuts in the 6.4 metres thick drum wall into eight piers. The thickness of the dome varies from 6.4 metres at the base of the dome to 1.2 metres around the oculu.

We visit Tazza D'Oro ("Cup of Gold") for a frozen espresso with whipped cream.

Despite all the washi washa regarding immigration, the UN reports that the percentage of "international immigrants" to the world's population is unchanged since 1960 at 3%.  The real story is urban migration as cities will attract 75% of the world's population by 2100.  Would the Romans have agreed? Probably.