The Clitunno ”Temple” is a small chapel in the shape of a Corinthian temple with four columns in front and two lateral porticoes. The façade is cadenced by splendid leaf-covered columns and an architrave which bears an inscription invoking the Lord in square Roman capitals, one of very few examples of monumental epigraphy from the Early Middle Ages.
In terms of its design and the expert reuse of Classical features, the ‘Temple’ resembles San Salvatore in Spoleto. Inside, painted wall decorations of notable quality are preserved; they have been compared to those in the presbytery of Santa Maria Antiqua in Rome. The frescoes frame a marble canopy in the apse, itself distinguished by a mixture of reused and newly-made architectural components.