Orvieto Cathedral, plan and exterior elevation, founded 1290 and begun on a design by Fra Bevignate; buttresses ca. 1308 and faÁade begun ca. 1310 by Lorenzo Maitani; enlarged apse and transepts ca. 1350-1450.

Orvieto Cathedral, plan and exterior elevation, founded 1290 and begun on a design by Fra Bevignate; buttresses ca. 1308 and façade begun ca. 1310 by Lorenzo Maitani; enlarged apse and transepts ca. 1350-1450.