The cathedral was consecrated way back in 1198, but later-day (17th century) remodelling included a striking Renaissance porch. In the 11th century, huge blocks of salvaged stones from Roman buildings were put to good use in the construction of its rather sombre belltower. Mosaic frescoes in the domed apse were executed by Filippo Lippi and his assistants. Lippi died before completing the work and Lorenzo de Medici travelled to Spoleto from Florence and ordered Lippi’s son, Filippino, to build a mausoleum for the artist. This now stands in the right transept of the cathedral.
