The most notable room is the central hall, with a mosaic decoration; once it had a fountain too, from which the water flowed outside.

The beautiful mosaic decoration and the rose window are attributed to him.

The pavement is the original one and has a splendid mosaic decoration.

He was active in the mosaic decoration of the cathedral at Orvieto.

From the cornices the mosaic decoration begins on the walls and vault.

In Ravenna also are two interesting baptisteries with their mosaic decoration.

Above is a gable with window and mosaic decoration.

The inside has mosaic decorations and is noted for the retractable roof.

Fragments of the mosaic decoration can be found in the Vatican grottoes.

Another four churches were excavated nearby with traces of mosaic decoration.