I will change the subject.
At Pisa we climbed up to the top of the strangest structure the world has any knowledge of--the Leaning Tower.

As every one knows, it is in the neighborhood of one hundred and eighty feet high--and I beg to observe that one hundred and eighty feet reach to about the hight of four ordinary three-story buildings piled one on top of the other, and is a very considerable altitude for a tower of uniform thickness to aspire to, even when it stands upright--yet this one leans more than thirteen feet out of the perpendicular.

It is seven hundred years old, but neither history or tradition say whether it was built as it is, purposely, or whether one of its sides has settled.

There is no record that it ever stood straight up.

It is built of marble.