The windows are there, but they have become opaque.

None of the coloured ones in the aisle allows more than a filtration of light through it; there are only the plain, circular ones high up and those rich, coloured, circular ones under the dome to do the work.

In a little while, however, one's eyes not only become accustomed to the twilight but are very grateful for it; and beginning to look inquiringly about, as they ever do in this city of beauty, they observe, just inside, an instant reminder of the antiseptic qualities of Italy.

For by the first great pillar stands a receptacle for holy water, with a pretty and charming angelic figure upon it, which from its air of newness you would think was a recent gift to the cathedral by a grateful Florentine.

It is six hundred years old and perhaps was designed by Giotto himself.
The emptiness of the Duomo is another of its charms.