Busman's Holiday II: Libreria Piccolo, Duomo, Siena Italy

The Libreria Piccolominea is located in a small room in the Siena Cathedral (Duomo).  The imposing church, inside and out, was constructed between the years 1215 and 1263.

The room contains a collection of choir books.

Example 1

Example 2

And these eye-popping frescoes, painted by Bernadino di Betto.

The ceiling was painted by Pinturicchio.

A combination of the 2.