"this edifice is inhabited above and below, like San Sepolcro. Above, it is arranged in the manner as it is below, except that above there is lantern c d, and below it has lantern a b. And when you enter into the church below, you go down ten steps, and when you go up into the one above, you go up twenty steps."
The model represents a central plan church
on two levels. The central body rises upon its
square base, with the second level ornamented
by a gallery of porticos, reachable from each
side by means of a double staircase.
The church is surmounted by an octagonal
lantern surrounded by four small cupolas
and four peaked bell towers.
As recorded in the manuscript notes,
the idea of the double level is to be referenced
to the structure of the church of San Sepolcro in Milano.
The model is based on the drawing:
- Codex Ashburnham 2037 f. 4 r. (1487-1490)
Paris, Institut de France